Stop issue playlist continuing when disabling AutoPlaylist

If you use the "music" playlist on boot, it'll keep it going even when you manually override to something else.  This seems to fix this condition.

usermods/usermod_v2_auto_playlist/usermod_v2_auto_playlist.h

@@ -303,6 +303,7 @@ class AutoPlaylistUsermod : public Usermod {
           #ifdef USERMOD_AUTO_PLAYLIST_DEBUG
           USER_PRINTF("AutoPlaylist: disable due to manual change of playlist from %u to %d, preset:%u\n", lastAutoPlaylist, currentPlaylist, currentPreset);
           #endif
+          suspendPlaylist();
           functionality_enabled = false;
         } else if (currentPlaylist == musicPlaylist) {
           #ifdef USERMOD_AUTO_PLAYLIST_DEBUG