revert changes

Author: denrase

dio/lib/src/dio_event_processor.dart

@@ -158,6 +158,5 @@ class DioEventProcessor implements EventProcessor {
           return null;
         }
     }
-    return null;
   }
 }

flutter/lib/src/binding_wrapper.dart

@@ -1,5 +1,6 @@
 // ignore_for_file: invalid_use_of_internal_member
 
+import '../sentry_flutter.dart';
 import 'package:flutter/widgets.dart';
 import 'package:meta/meta.dart';
 

flutter/lib/src/navigation/sentry_navigator_observer.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/widgets.dart';
 
+import '../../sentry_flutter.dart';
 import '../sentry_native.dart';
 import '../sentry_native_channel.dart';
 

flutter/lib/src/user_interaction/sentry_user_interaction_widget.dart

@@ -207,6 +207,7 @@ import 'package:flutter/rendering.dart';
 import 'package:meta/meta.dart';
 
 import '../../sentry_flutter.dart';
+import '../widget_utils.dart';
 import 'user_interaction_widget.dart';
 
 const _tapDeltaArea = 20 * 20;

flutter/lib/src/view_hierarchy/sentry_tree_walker.dart

@@ -203,6 +203,8 @@
 
 import 'package:flutter/widgets.dart';
 
+import '../../sentry_flutter.dart';
+import '../widget_utils.dart';
 
 class _TreeWalker {
   static const _privateDelimiter = '_';

logging/lib/src/logging_integration.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:logging/logging.dart';
 import 'package:sentry/sentry.dart';
 
+import 'extension.dart';
 import 'version.dart';
 
 /// An [Integration] which listens to all messages of the