Ensuring the internalSeek flag in PlaybackController.js is reset upon skipping the next _onPlaybackSeeking

Author: ShikiSeiren

src/streaming/controllers/PlaybackController.js

@@ -667,6 +667,7 @@ function PlaybackController() {
     function _onPlaybackSeeking() {
         // Check if internal seeking to be ignored
         if (internalSeek) {
+            internalSeek = false;
             return;
         }