Make goog.events libraries compatible with clutz (JavaScript to TypeScript converter).
Make goog.events libraries compatible with clutz (JavaScript to TypeScript converter).

[Clutz](https://github.com/angular/clutz) is the Angular Closure JS to TypeScript generator.  Clutz can't infer types from a superclass for methods annotated only with @override.  Repeat the types on the overriding methods instead.

RELNOTES: Make goog.events libraries compatible with clutz (JS to TS converter).
PiperOrigin-RevId: 328833291

google/closure-library,google/closure-library,google/closure-library,google/closure-library,google/closure-library