build: update license headers to reference Google LLC (#37205)

Update the license headers throughout the repository to reference Google LLC
rather than Google Inc, for the required license headers.

PR Close #37205

packages/compiler/test/parse_util_spec.ts

@@ -1,6 +1,6 @@
 /**
  * @license
- * Copyright Google Inc. All Rights Reserved.
+ * Copyright Google LLC All Rights Reserved.
  *
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license
@@ -23,4 +23,4 @@ import {ParseError, ParseErrorLevel, ParseLocation, ParseSourceFile, ParseSource
       expect(warning.toString()).toEqual('warning ("foo\n[WARNING ->]bar\nfoo"): url@1:0');
     });
   });
-}
+}