fix(animations): only pass in same typed players as previous players into web-animations (#12907)

Closes #12907

modules/@angular/platform-browser/src/dom/web_animations_driver.ts

@@ -54,6 +54,9 @@ export class WebAnimationsDriver implements AnimationDriver {
       playerOptions['easing'] = easing;
     }
 
+    // there may be a chance a NoOp player is returned depending
+    // on when the previous animation was cancelled
+    previousPlayers = previousPlayers.filter(filterWebAnimationPlayerFn);
     return new WebAnimationsPlayer(
         element, formattedSteps, playerOptions, <WebAnimationsPlayer[]>previousPlayers);
   }
@@ -71,3 +74,7 @@ function _populateStyles(styles: AnimationStyles, defaultStyles: {[key: string]:
   });
   return data;
 }
+
+function filterWebAnimationPlayerFn(player: AnimationPlayer) {
+  return player instanceof WebAnimationsPlayer;
+}