Enforce override annotations in dart2js

Update the excludes in the test directory analysis options to match the
files that were not updated to add override annotations.
Update the excludes in `testing.json` to match the analysis options.

With a consistent analysis options test config the diagnostics in
editors will match what is enforced by the test.

Also clean up the no longer required `enableSuperMixins` config.

Change-Id: If0e23642c25e0b5c1aced6a5a8c8c05a6da538f8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/96836
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Commit-Queue: Nate Bosch <nbosch@google.com>

pkg/compiler/analysis_options.yaml

@@ -10,3 +10,7 @@ analyzer:
     deprecated_member_use: ignore
     # Allow deprecated calls from within the same package
     deprecated_member_use_from_same_package: ignore
+
+linter:
+  rules:
+    - annotate_overrides

pkg/compiler/testing.json

@@ -14,7 +14,9 @@
     ],
 
     "exclude": [
-      "^tests/compiler/dart2js/inference/data/super_invoke\\.dart"
+      "^tests/compiler/dart2js/.*/data/.*",
+      "^tests/compiler/dart2js/.*/model_data/.*",
+      "^tests/compiler/dart2js/deferred_loading/libs/.*"
     ]
   }
 }

tests/compiler/dart2js/analysis_options.yaml

@@ -3,13 +3,15 @@
 # BSD-style license that can be found in the LICENSE file.
 
 analyzer:
-  language:
-    enableSuperMixins: false
-
   errors:
     todo: ignore
     deprecated_member_use: ignore
 
   exclude:
-    - data/*
-    - sourcemaps/data/*
+    - '**/data/*'
+    - '**/model_data/*'
+    - 'deferred_loading/libs/*'
+
+linter:
+  rules:
+    - annotate_overrides