enhanced enums support for avoid_renaming_method_parameters

[pq]

No description provided.

[pq]

  test_rename() async {
    await assertDiagnostics(r'''
class C {
  int f(int f) => f;
}
enum A implements C {
  a,b,c;
  @override
  int f(int x) => x;
}
''', [
      lint('avoid_renaming_method_parameters', 28, 8), // todo(pq): update index
    ]);
  }

Tip-of-trunk fails w/:

package:test_api                                       fail
test/rule_test_support.dart 216:7                      LintRuleTest.assertDiagnostics
===== asynchronous gap ===========================
test/rules/avoid_renaming_method_parameters.dart 27:5  AvoidRenamingMethodParametersTest.test_rename

Expected but did not find:
  avoid_renaming_method_parameters [28, 8]

Found but did not expect:
  HintCode.OVERRIDE_ON_NON_OVERRIDING_METHOD [82, 1, The method doesn't override an inherited method.]

@scheglov: I don't think the HintCode.OVERRIDE_ON_NON_OVERRIDING_METHOD is correct?