fix(RightSidebar) - Optimize update active tab ( sharedItems)

[DorraJaouad]

Minimized fetch requests of shared Items
Regression from #10558
Part of #10559

🚧 Tasks

• code review

[Antreesy]

Nice addition!

Let's also add a spinner to this component:

<template>
	<LoadingComponent v-if="loading" /> // should be aligned to center
	<div v-else>
	...
	</div>
</template>

[Antreesy]

🦭

[DorraJaouad]

/backport to stable27

[DorraJaouad]

/backport to stable26

[backportbot-nextcloud]

The backport to stable26 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable26
git pull origin stable26

# Create the new backport branch
git checkout -b fix/foo-stable26

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable26

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport