fix: maximise player when playing new video

Fixes a regression from 12be4c7,
where upon trying to play a new video, the player would stay minimised.
Additional, the playing video would be added to the queue, causing the
previously played video to be played again.
This is confusing to users, as it breaks the expectation of the player
opening when trying to play a video.

app/src/main/java/com/github/libretube/helpers/NavigationHelper.kt

@@ -26,6 +26,7 @@ import com.github.libretube.ui.base.BaseActivity
 import com.github.libretube.ui.fragments.AudioPlayerFragment
 import com.github.libretube.ui.fragments.PlayerFragment
 import com.github.libretube.ui.views.SingleViewTouchableMotionLayout
+import com.github.libretube.util.PlayingQueue
 
 object NavigationHelper {
     private val handler = Handler(Looper.getMainLooper())
@@ -70,6 +71,9 @@ object NavigationHelper {
         val activity = ContextHelper.unwrapActivity<MainActivity>(context)
         val attachedToRunningPlayer = activity.runOnPlayerFragment {
             this.playNextVideo(videoUrlOrId.toID())
+            PlayingQueue.clear()
+            // maximize player
+            this.binding.playerMotionLayout.transitionToStart()
             true
         }
         if (attachedToRunningPlayer) return