Clean up violations of Dart lint prefer_collection_literals

Use collection literals where possible.  Because a lot of this code
explicitly uses `LinkedHashMap` to indicate that order is important,
add appropriate `// ignore` comments until
https://github.com/dart-lang/linter/issues/1649 is addressed.

PiperOrigin-RevId: 360552809

Author: jamesderlin

charts_common/lib/src/chart/bar/bar_lane_renderer.dart

@@ -63,10 +63,12 @@ class BarLaneRenderer<D> extends BarRenderer<D> {
   /// as the data was given to the chart. For the case where both grouping and
   /// stacking are disabled, this means that bars for data later in the series
   /// will be drawn "on top of" bars earlier in the series.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _barLaneStackMap = LinkedHashMap<String, List<AnimatedBar<D>>>();
 
   /// Store a map of flags to track whether all measure values for a given
   /// domain value are null, for every series on the chart.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _allMeasuresForDomainNullMap = LinkedHashMap<D, bool>();
 
   factory BarLaneRenderer({BarLaneRendererConfig config, String rendererId}) {
@@ -89,7 +91,7 @@ class BarLaneRenderer<D> extends BarRenderer<D> {
       final domainFn = series.domainFn;
       final measureFn = series.rawMeasureFn;
 
-      final domainValues = Set<D>();
+      final domainValues = <D>{};
 
       for (var barIndex = 0; barIndex < series.data.length; barIndex++) {
         final domain = domainFn(barIndex);

charts_common/lib/src/chart/bar/base_bar_renderer.dart

@@ -88,6 +88,7 @@ abstract class BaseBarRenderer<D, R extends BaseBarRendererElement,
   /// as the data was given to the chart. For the case where both grouping and
   /// stacking are disabled, this means that bars for data later in the series
   /// will be drawn "on top of" bars earlier in the series.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _barStackMap = LinkedHashMap<String, List<B>>();
 
   // Store a list of bar stacks that exist in the series data.
@@ -98,6 +99,7 @@ abstract class BaseBarRenderer<D, R extends BaseBarRendererElement,
   final _currentKeys = <String>[];
 
   /// Stores a list of stack keys for each group key.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _currentGroupsStackKeys = LinkedHashMap<D, Set<String>>();
 
   /// Optimization for getNearest to avoid scanning all data if possible.
@@ -462,7 +464,7 @@ abstract class BaseBarRenderer<D, R extends BaseBarRendererElement,
         // Store off stack keys for each bar group to help getNearest identify
         // groups of stacks.
         _currentGroupsStackKeys
-            .putIfAbsent(domainValue, () => Set<String>())
+            .putIfAbsent(domainValue, () => <String>{})
             .add(barStackMapKey);
 
         // Get the barElement we are going to setup.

charts_common/lib/src/chart/cartesian/cartesian_chart.dart

@@ -293,6 +293,7 @@ abstract class CartesianChart<D> extends BaseChart<D> {
         removeView(axis);
       });
 
+      // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
       _disjointMeasureAxes = LinkedHashMap<String, NumericAxis>();
       if (_disjointMeasureAxesSpec != null) {
         _disjointMeasureAxesSpec.forEach((String axisId, AxisSpec axisSpec) {

charts_common/lib/src/chart/common/base_chart.dart

@@ -66,7 +66,7 @@ abstract class BaseChart<D> {
   /// initial draw cycle (e.g. a [Legend] may hide some series).
   List<MutableSeries<D>> _currentSeriesList;
 
-  Set<String> _usingRenderers = Set<String>();
+  Set<String> _usingRenderers = <String>{};
   Map<String, List<MutableSeries<D>>> _rendererToSeriesList;
 
   final _seriesRenderers = <String, SeriesRenderer<D>>{};
@@ -585,7 +585,7 @@ abstract class BaseChart<D> {
     Map<String, List<MutableSeries<D>>> rendererToSeriesList = {};
 
     var unusedRenderers = _usingRenderers;
-    _usingRenderers = Set<String>();
+    _usingRenderers = <String>{};
 
     // Build map of rendererIds to SeriesLists.
     seriesList.forEach((MutableSeries<D> series) {

charts_common/lib/src/chart/common/behavior/legend/series_legend.dart

@@ -31,7 +31,7 @@ import 'per_series_legend_entry_generator.dart';
 /// By default this behavior creates a legend entry per series.
 class SeriesLegend<D> extends Legend<D> {
   /// List of currently hidden series, by ID.
-  final _hiddenSeriesList = Set<String>();
+  final _hiddenSeriesList = <String>{};
 
   /// List of series IDs that should be hidden by default.
   List<String> _defaultHiddenSeries;

charts_common/lib/src/chart/common/behavior/line_point_highlighter.dart

@@ -106,6 +106,7 @@ class LinePointHighlighter<D> implements ChartBehavior<D> {
   ///
   /// [LinkedHashMap] is used to render the series on the canvas in the same
   /// order as the data was provided by the selection model.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   var _seriesPointMap = LinkedHashMap<String, _AnimatedPoint<D>>();
 
   // Store a list of points that exist in the series data.

charts_common/lib/src/chart/common/behavior/range_annotation.dart

@@ -100,6 +100,7 @@ class RangeAnnotation<D> implements ChartBehavior<D> {
   ///
   /// [LinkedHashMap] is used to render the series on the canvas in the same
   /// order as the data was given to the chart.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _annotationMap = LinkedHashMap<String, _AnimatedAnnotation<D>>();
 
   // Store a list of annotations that exist in the current annotation list.

charts_common/lib/src/chart/line/line_renderer.dart

@@ -135,7 +135,7 @@ class LineRenderer<D> extends BaseCartesianRenderer<D> {
       final styleSegments = <_LineRendererElement<D>>[];
       var styleSegmentsIndex = 0;
 
-      final usedKeys = Set<String>();
+      final usedKeys = <String>{};
 
       // Configure style segments for each series.
       String previousSegmentKey;

charts_common/lib/src/chart/pie/arc_renderer.dart

@@ -49,6 +49,7 @@ class ArcRenderer<D> extends BaseSeriesRenderer<D> {
   ///
   /// [LinkedHashMap] is used to render the series on the canvas in the same
   /// order as the data was given to the chart.
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _seriesArcMap = LinkedHashMap<String, _AnimatedArcList<D>>();
 
   // Store a list of arcs that exist in the series data.

charts_common/lib/src/chart/scatter_plot/point_renderer.dart

@@ -75,6 +75,7 @@ class PointRenderer<D> extends BaseCartesianRenderer<D> {
   /// [LinkedHashMap] is used to render the series on the canvas in the same
   /// order as the data was given to the chart.
   @protected
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   var seriesPointMap = LinkedHashMap<String, List<AnimatedPoint<D>>>();
 
   // Store a list of lines that exist in the series data.

charts_common/lib/src/chart/scatter_plot/symbol_annotation_renderer.dart

@@ -59,6 +59,7 @@ class SymbolAnnotationRenderer<D> extends PointRenderer<D>
 
   var _currentHeight = 0;
 
+  // ignore: prefer_collection_literals, https://github.com/dart-lang/linter/issues/1649
   final _seriesInfo = LinkedHashMap<String, _SeriesInfo<D>>();
 
   SymbolAnnotationRenderer(