Remove abi key from local golden file testing (#149696)

Fixes https://github.com/flutter/flutter/issues/149435

CI does not comprehensively cover all of the possible abi keys, so some folks can't test locally if their machine's abi does not match CI. This just removes it from the local testing look up. The right image will be summoned, and in CI we can still keep track of it.

packages/flutter_goldens/lib/skia_client.dart

@@ -579,7 +579,11 @@ class SkiaGoldClient {
     final Map<String, Object?> parameters = <String, Object?>{
       if (_isBrowserTest)
         'Browser' : _browserKey,
-      'Abi': '$abi',
+      // This method is only used in local testing to look up the given image.
+      // CI is not comprehensive in possible abi keys, so false negatives can
+      // be produced if we include it in local testing. For example CI uses
+      // macos_x64 but a contributor could have macos_arm64.
+      // 'Abi': '$abi',
       'CI' : 'luci',
       'Platform' : platform.operatingSystem,
       if (webRenderer != null)

packages/flutter_goldens/test/flutter_goldens_test.dart

@@ -514,7 +514,7 @@ void main() {
 
        expect(
          skiaClient.getTraceID('flutter.golden.1'),
-         equals('d8867d66b8f0be8d0c31598d8370f5dd'),
+         equals('ae18c7a6aa48e0685525dfe8fdf79003'),
        );
      });
 
@@ -548,7 +548,7 @@ void main() {
 
        expect(
          skiaClient.getTraceID('flutter.golden.1'),
-         equals('febd0e8ef6512c2a82c964b2a9e60012'),
+         equals('e9d5c296c48e7126808520e9cc191243'),
        );
      });
 
@@ -576,7 +576,7 @@ void main() {
       );
       expect(
         skiaClient.getTraceID('flutter.golden.1'),
-        equals('2e3d3f41cb4470748fa1c941f7762823'),
+        equals('9968695b9ae78cdb77cbb2be621ca2d6'),
       );
     });