Fix #28120, strong mode allows field overrides

pkg/analyzer/test/src/context/context_test.dart

Index: pkg/analyzer/test/src/context/context_test.dart
diff --git a/pkg/analyzer/test/src/context/context_test.dart b/pkg/analyzer/test/src/context/context_test.dart
index 8374e0501d195530e5c914e1b63110a6d2991da1..441cad9c485222d6c705c63c4f422c986a8c73e9 100644
--- a/pkg/analyzer/test/src/context/context_test.dart
+++ b/pkg/analyzer/test/src/context/context_test.dart
@@ -4326,9 +4326,8 @@ class B extends A {
 }
 ''');
     _performPendingAnalysisTasks();
-    expect(context.getErrors(a).errors, hasLength(2));
+    expect(context.getErrors(a).errors, hasLength(1));
     // Update a.dart: rename "int foo" to "int bar".
-    // The strong mode "getter cannot override field" error is gone.
     context.setContents(
         a,
         r'''