fix(ivy): detach ViewRef from ApplicationRef on destroy (angular#27276)

Currently we store the `_appRef` when a `ViewRef` is attached, however we don't use it for anything. These changes use it to detach the view from the `ApplicationRef` when it is destroyed. These changes also fix that the `ComponentRef` doesn't remove its `ViewRef` on destroy.

PR Close angular#27276

Author: crisbeto

packages/core/src/render3/view_ref.ts

@@ -59,7 +59,9 @@ export class ViewRef<T> implements viewEngine_EmbeddedViewRef<T>, viewEngine_Int
   }
 
   destroy(): void {
-    if (this._viewContainerRef && viewAttached(this._view)) {
+    if (this._appRef) {
+      this._appRef.detachView(this);
+    } else if (this._viewContainerRef && viewAttached(this._view)) {
       this._viewContainerRef.detach(this._viewContainerRef.indexOf(this));
       this._viewContainerRef = null;
     }