fix(animations): always fire inner trigger callbacks even if blocked by parent animations (#19753)

Closes #19100

PR Close #19753

packages/animations/browser/src/render/web_animations/web_animations_player.ts

@@ -184,6 +184,13 @@ export class WebAnimationsPlayer implements AnimationPlayer {
     }
     this.currentSnapshot = styles;
   }
+
+  /* @internal */
+  triggerCallback(phaseName: string): void {
+    const methods = phaseName == 'start' ? this._onStartFns : this._onDoneFns;
+    methods.forEach(fn => fn());
+    methods.length = 0;
+  }
 }
 
 function _computeStyle(element: any, prop: string): string {