fix(exoplayer): ensure player is stopped when invalid uri is configured

android/src/main/java/com/brentvatne/exoplayer/ReactExoplayerViewManager.java

@@ -182,6 +182,8 @@ public class ReactExoplayerViewManager extends ViewGroupManager<ReactExoplayerVi
                 if (srcUri != null) {
                     videoView.setRawSrc(srcUri, extension);
                 }
+            } else {
+                videoView.clearSrc();
             }
         }
     }