Display related resources errors in the panel

[Pytal]

Errors for related resources should not be shown in a toast notification and should instead be placed within tha panel itself

Apps

• Update implementation in the apps listed in Add related resources panel to all places with "Add to a project" nextcloud/related_resources#4
  • files Chore(deps): Bump @nextcloud/vue from 7.2.0 to 7.9.0 nextcloud/related_resources#203 [stable26] Chore(deps): Bump @nextcloud/vue from 7.2.0 to 7.9.0 nextcloud/related_resources#205
  • talk Show empty content only when there is nothing to show nextcloud/spreed#9256
  • deck Chore(deps): Bump @nextcloud/vue from 7.8.1 to 7.8.4 nextcloud/deck#4559 [stable26] Chore(deps): Bump @nextcloud/vue from 7.8.1 to 7.8.4 nextcloud/deck#4584

[Pytal]

Debugging of no results on master https://github.com/nextcloud/related_resources being done by @ArtificialOwl before implementation

[Pytal]

Debugged!

[Pytal]

Done in #3852

[Pytal]

Reopening to track updates to tasks in description