Display Insufficient space

[daufinsyd]

Is your feature request related to a problem? Please describe.
When moving / copying files from a directory to a group folder but the group folder doesn't have enough free space, it will silently failed.

Describe the solution you'd like
Show a notification to the user on why the files couldn't be moved

Describe alternatives you've considered

Additional context

"CustomMessage":"Insufficient space in /CPF, 777766 required, 50 available"

[provokateurin]

Thanks for the report, this will be fixed in nextcloud/server#56527