Deduping error msg also for drag-n-drop in Block Editor (Gutenberg)

I inquired this in 2021-08 (thread closed meanwhile) and got a reply by @drywallbmb that this is of high priority for you plugin developers too.

Does this work meanwhile? If not, is this in the works?

Last but not least, you are developers of your own plugin. May I nevertheless interest you to look into a Gutenberg bug itself which I reported? Because it is related and to some degree this bug will negatively play into the drag-n-drop experience of media files. Hence I wanted to let you know on this too. Maybe you have some idea. Any involvement over there (comment etc) would be appreciated:
Inserting media via Gutenberg creates kebab case in media title vs. Upload New Media preserves whitespace