[Bug]: Canceling a move operation should not show an error

[SystemKeeper]

⚠️ 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 selecting multiple files to move, closing the file picker with "X" does lead to an error, although that should not be treated as an error.

Bildschirmaufnahme.2024-06-18.um.09.22.48.mov

Seen on 28, 29 and master

Steps to reproduce

1. Select multiple files
2. Select "Move or Copy"
3. Close dialog with "X"

Expected behavior

No error is shown

Installation method

Community Manual installation with Archive

Nextcloud Server version

master

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

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response