[Bug]: Two different ' this name is already in use ' message implementations in file creation on web.

⚠️ 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 creating a new file in the web interface and trying to name the file exactly like another file two 'this name is already in use' messages are shown through two different implementations.

One shows a red border around the input field and the message beneath it as long as the name is already in use.
The other is a tooltip style message that requires key or mouse button input to dissappear (although the name is still already in use, as indicated by the first mentioned implementation.

Steps to reproduce

1. Create a file with a chosen name.
2. Try to create another file of the same file type with the same name in the same folder.
3. See two different implementations of the 'This name is already in use' message.

Expected behavior

To see only one message, preferably the red text type message with the red border around the input field.

Nextcloud Server version

33 (33.0.6)

Operating system

No response

PHP engine version

No response

Web server

No response

Database engine version

No response

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

No response

Are you using the Nextcloud Server Encryption module?

No response

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 duplicate-name file creation in the web interface and trace the two validation messages shown during the flow. Done means the duplicate-name case presents only one message, preferably the red text with the red input border, while preserving the existing validation behavior.