fix(angular): export RefresherPullEnd types (#30991)

Issue number: internal

---------

## What is the current behavior?
Currently, the 8.8 refresher events are not exported to Angular

## What is the new behavior?
With this change, we export the new events and also add Angular tests to
validate that they work and will continue working in the future.

## Does this introduce a breaking change?

- [ ] Yes
- [X] No

packages/angular/standalone/src/directives/proxies.ts

@@ -1685,8 +1685,7 @@ called when the async operation has completed.
    */
   ionPull: EventEmitter<CustomEvent<void>>;
   /**
-   * Emitted when the user begins to start pulling down.
-TODO(FW-7044): Remove this in a major release @deprecated Use `ionPullStart` instead.
+   * Emitted when the user begins to start pulling down. @deprecated Use `ionPullStart` instead.
    */
   ionStart: EventEmitter<CustomEvent<void>>;
   /**

packages/angular/standalone/src/index.ts

@@ -112,6 +112,8 @@ export {
   RangeKnobMoveEndEventDetail,
   RefresherCustomEvent,
   RefresherEventDetail,
+  RefresherPullEndCustomEvent,
+  RefresherPullEndEventDetail,
   ReorderMoveCustomEvent,
   ReorderMoveEventDetail,
   ReorderEndCustomEvent,