fix: Safari playback stall with overrideNative and experimentalUseMMS

Safari playback does not start when using overrideNative together with
experimentalUseMMS.

This appears to be caused by setting the segment metadata track mode to
'hidden', which can stall playback in Safari when using Managed Media
Source.

Disable the metadata track in this specific scenario to prevent Safari
from processing it and allow playback to start normally.

Fixes #1600

Author: Demenus

src/playlist-controller.js

@@ -254,7 +254,15 @@ export class PlaylistController extends videojs.EventTarget {
       label: 'segment-metadata'
     }, false).track;
 
-    this.segmentMetadataTrack_.mode = 'hidden';
+    // Only disable segment metadata track in Safari/iOS when using overrideNative HLS
+    if ((videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS) &&
+      options.overrideNative &&
+      options.experimentalUseMMS &&
+      this.sourceType_ === 'hls') {
+        this.segmentMetadataTrack_.mode = 'disabled';
+    } else {
+        this.segmentMetadataTrack_.mode = 'hidden';
+    }
 
     this.decrypter_ = new Decrypter();
     this.sourceUpdater_ = new SourceUpdater(this.mediaSource);