[main] Fix: Adding new tag creates a 'ghost' tag

[theoholl]

• Resolves: Adding a new tag to a card has unexpected behaviour #6680
• Target version: main

Summary

• Preventing ghost/duplicate tag pills by letting the tag selector emit only labels with ids and by using NcSelect’s tracked id to avoid placeholder options. However, the user has to wait for the server to create a new tag and send it back to the client before it is getting rendered in the browser. This will result in a small delay before the new tag appears.
• Removed Vuex strict-mode warnings.

Screencasts

Before:

Screencast.Bug.mp4

After:

Screencast.Fix.mp4

[grnd-alt]

Thanks a lot for your contribution 🫶
I like the approach in general, but I think making the store logic more complex might not be the right solution as the existing functions are already in place and work properly.
The function calls to them are not correct however, I think we should keep the store logic as is and fix the calls for now.
I've created a PR with a simpler fix to not push to your fork: #7508

As mentioned there we should think about adding some more logic to the card Store, or at least be more declarative about what the addLabels function requires as params.
I am open to discuss on how to improve that as a follow up.