[beta] [analysis_server] Remove the singleton uriConverter and pass explicitly to all toJson/fromJson methods

This avoids accidentally using the converter when talking to plugins, (at least for now) URIs are never expected, and file paths should always be used regardless of which mode the server is in.

This unfortunately touches a _lot_ of code, so I've pushed in many separate patch sets to Gerrit.

Fixes Dart-Code/Dart-Code#5156

Cherry-pick: https://dart-review.googlesource.com/c/sdk/+/373745
Cherry-pick-request: #56126
Change-Id: I93a47ccc5f5e6ee9d9402938acf47590e140f49d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/374361
Reviewed-by: Samuel Rawlins <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Brian Wilkerson <[email protected]>

Author: DanTup

Diff for: pkg/analysis_server/benchmark/integration/input_converter.dart

@@ -94,7 +94,8 @@ abstract class CommonInputConverter extends Converter<String, Operation?> {
       // Track overlays in parallel with the analysis server
       // so that when an overlay is removed, the file can be updated on disk
       var request = Request.fromJson(json)!;
-      var params = AnalysisUpdateContentParams.fromRequest(request);
+      var params = AnalysisUpdateContentParams.fromRequest(request,
+          clientUriConverter: null);
       params.files.forEach((String filePath, change) {
         if (change is AddContentOverlay) {
           var content = change.content;

Diff for: pkg/analysis_server/lib/protocol/protocol.dart

@@ -517,7 +517,7 @@ class Response extends RequestOrResponse {
     jsonObject[ID] = id;
     var error = this.error;
     if (error != null) {
-      jsonObject[ERROR] = error.toJson();
+      jsonObject[ERROR] = error.toJson(clientUriConverter: null);
     }
     var result = this.result;
     if (result != null) {
@@ -537,8 +537,9 @@ class Response extends RequestOrResponse {
       RequestError? decodedError;
       var error = json[Response.ERROR];
       if (error is Map) {
-        decodedError =
-            RequestError.fromJson(ResponseDecoder(null), '.error', error);
+        decodedError = RequestError.fromJson(
+            ResponseDecoder(null), '.error', error,
+            clientUriConverter: null);
       }
 
       Map<String, Object?>? decodedResult;