[linter] Add field and super parameter tests for comment_references lint

The core issue was solved in c8b1843.
This CL adds tests to verify the linter correctly finds the associated static elements and doesn't report a comment_references lint.

Closes https://github.com/dart-lang/linter/issues/3563

Bug: https://github.com/dart-lang/linter/issues/3563
Change-Id: Icf281faf1934b135b51e98271be461b527b83a14
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/339061
Auto-Submit: Parker Lougheed <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>
Reviewed-by: Phil Quitslund <[email protected]>
Reviewed-by: Konstantin Shcheglov <[email protected]>

Author: parlough

pkg/linter/test/rules/comment_references_test.dart

@@ -93,6 +93,30 @@ class A {
 ''');
   }
 
+  test_parameter_constructor_field() async {
+    await assertNoDiagnostics(r'''
+class A {
+  final int x;
+
+  /// [x]
+  A(this.x);
+}
+''');
+  }
+
+  test_parameter_constructor_super() async {
+    await assertNoDiagnostics(r'''
+class A {
+  A(int x);
+}
+
+class B extends A {
+  /// [x]
+  B(super.x);
+}
+''');
+  }
+
   test_this() async {
     await assertDiagnostics(r'''
 /// [this]