[Now Playing] Default Album cover theme for Now playing themes

app/src/main/java/code/name/monkey/retromusic/util/PreferenceUtil.kt

@@ -561,6 +561,8 @@ object PreferenceUtil {
         }
         set(value) = sharedPreferences.edit {
             putInt(NOW_PLAYING_SCREEN_ID, value.id)
+            // Also set a cover theme for that now playing
+            value.defaultCoverTheme?.let { coverTheme -> albumCoverStyle = coverTheme }
         }
 
     val albumCoverTransform: ViewPager.PageTransformer