Show message if no other users with access are found

[rullzer]

Fixes #18632
Show a small subtitle if no other users with access are found.

In action:

[kesselb]

Hmm. You already know how many other people have access. Why don't we show this as subtitle otherwise? This would prevent this little jump. Misread the code ;)

[rullzer]

Yeah the title jump is not ideal. But good enough for a quick fix.
@nextcloud/designers for better ideas for 18.0.1 ;)

[skjnldsv]

❤️

[jancborchardt]

@nextcloud/designers for better ideas for 18.0.1 ;)

• Show the subtitle directly
• Don’t even show the triangle toggle on the right if there’s no others with access

[rullzer]

@nextcloud/designers for better ideas for 18.0.1 ;)

* Show the subtitle directly

* Don’t even show the triangle toggle on the right if there’s no others with access

We can't do that. The toggle triggers a request to the backend. And since this can be very costly. We don't want to do it on all openings of the sidebar.

[jancborchardt]

Ok, then different proposal:
If there are no others with access, on opening the "Others with access" menu, show an entry like a person entry saying:

No others with access
People with access to parent folders will show up here

[wiswedel]

If there are no others with access, on opening the "Others with access" menu, show an entry like a person entry saying:

No others with access
People with access to parent folders will show up here

I find that very user friendly and self-documenting

[rullzer]

@jancborchardt fine by me. Please fill an issue. And we'll see if we can tackle it for 18. Or if it has to wait for 18.0.1 because of time constraints.