Fix video group title not displayed after grouping

application/vlc-android/src/org/videolan/vlc/gui/dialogs/AddToGroupDialog.kt

@@ -90,7 +90,6 @@ class AddToGroupDialog : VLCBottomSheetDialogFragment(), SimpleAdapter.ClickHand
         }
 
         forbidNewGroup = try {
-            @Suppress("UNCHECKED_CAST")
             requireArguments().getBoolean(FORBID_NEW_GROUP)
         } catch (e: Exception) {
             true

application/vlc-android/src/org/videolan/vlc/viewmodels/mobile/VideosViewModel.kt

@@ -197,6 +197,7 @@ class VideosViewModel(context: Context, type: VideoGroupingType, val folder: Fol
             val newGroup = medialibrary.createVideoGroup(medias.map { it.id }.toLongArray())
             if (newGroup.title.isNullOrBlank()) {
                 newGroup.rename(medias[0].title)
+                newGroup.title = medias[0].title
             }
             newGroup
         }