[main] Improvement: Show updated board title on the open board

[theoholl]

• Resolves: Renaming a board should immediately update the title on the board #7485
• Target version: main

Summary

The editing the title of the current board, the new title is displayed immediately when the user is on the current board.

Screencast.Solution.mp4

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[luka-nextcloud]

@theoholl I think we should add cypress test for this case, could you please take care of it?