fix(core): unify the signature between ngZone and noopZone (#37581)

Now we have two implementations of Zone in Angular, one is NgZone, the other is NoopZone.
They should have the same signatures, includes
1. properties
2. methods

In this PR, unify the signatures of the two implementations, and remove the unnecessary cast.

PR Close #37581

packages/zone.js/lib/zone.ts

@@ -223,9 +223,9 @@ interface Zone {
    * @param task to run
    * @param applyThis
    * @param applyArgs
-   * @returns {*}
+   * @returns {any} Value from the `task.callback` function.
    */
-  runTask(task: Task, applyThis?: any, applyArgs?: any): any;
+  runTask<T>(task: Task, applyThis?: any, applyArgs?: any): T;
 
   /**
    * Schedule a MicroTask.