[Bug]: "+ New" button in file picker modal still displayed for user with zero quota

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When a user has no quota left, the "+ New" button is hidden in Nextcloud files as it should. It is, however, not hidden inside the file picker dialogue (used e.g. in Photos, Collectives and other apps). So the user can click on the button, try to create a new folder and gets an error.

Steps to reproduce

1. Set the quota of a user to a smaller amount than they are using or to 0 B, so the user has no remaining free quota
2. Log in as said user and open a file picker dialogue.
3. Click "+ New", type a name and click the ->
4. See the error "New folder couldn't be created"

Expected behavior

Consistently, all the "+ New" buttons for files should be hidden, when a user has no quota left.

Nextcloud Server version

32

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

Start by reproducing the file picker dialog with a user whose quota is fully used, then compare its "+ New" controls with those in Nextcloud Files. Confirm the fix by verifying that the button is hidden when no quota remains and that normal users can still create files or folders.