[Bug]: open graph for internal link shows Name in both name and title

⚠️ 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

Sharing an internal link somewhere where open graph is supported results in the name duplication and lack of clarity

Steps to reproduce

1.Have a name (settings → theming → name)
2. Make an internal link for some file or folder
3. Post it somewhere

Expected behavior

My Cool Name
Confidential Internal Share → let us actually customize this part
Slogan goes here

Actual behavior

My Cool Name
My Cool Name
Slogan goes here

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Apache (supported)

Database engine version

PostgreSQL

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

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

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

Configuration report

I don't think this is relevant

List of activated Apps

I don't think this is relevant

Nextcloud Signing status

I don't think this is relevant

Nextcloud Logs

I don't think this is relevant

Additional info

No response

Start by reproducing the internal-link Open Graph output on Nextcloud Server 31 with a configured theming name, then trace the code path that generates the shared file or folder metadata. Done means the preview no longer repeats the instance name and instead shows distinct name and title text, including the expected internal-share label.