fix(MediaController): pass in playbackRate when switching

src/browser/base/zen-components/ZenMediaController.mjs

@@ -199,6 +199,7 @@ class ZenMediaController {
       browser,
       position: positionState.position,
       duration: positionState.duration,
+      playbackRate: positionState.playbackRate,
       lastUpdated: Date.now(),
     });
   }
@@ -292,6 +293,7 @@ class ZenMediaController {
       ...mediaController,
       position: event.position,
       duration: event.duration,
+      playbackRate: event.playbackRate,
       lastUpdated: Date.now(),
     });
 
@@ -333,6 +335,7 @@ class ZenMediaController {
             this.setupMediaControlUI(nextController.controller.getMetadata(), {
               position: nextController.position + (nextController.controller.isPlaying ? elapsedTime : 0),
               duration: nextController.duration,
+              playbackRate: nextController.playbackRate,
             });
 
             this.showMediaControls();