Refactor pause logic in VidPlayerController and fix frame navigation bug

lib/view/player/controller_old.dart

@@ -185,7 +185,7 @@ class VidPlayerControllerNoSharing extends ChangeNotifier
   /// [index] frame index
   Future<bool> gotoFrame(int index) async {
     if (index < 0 || index >= totalFramesCount) return false;
-
+    if (index == currentFrameIndex) return true;
     _frameIndex = index;
     _updateFrame();
     return true;