[Bug]: Search result for sharing shows suggestion for incomplete email format

⚠️ 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

Search result for sharing shows suggestion for incomplete email format.

Steps to reproduce

1. Enable the sharing via mail function
2. Access Files app
3. Open sharing tab on a file/folder
4. Type "test@m"

Expected behavior

Suggestion for sharing via mail should not be shown. It should be shown only if keyword is "test@x.x" (complete email format)

Nextcloud Server version

29

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 issue in the Files app sharing tab with sharing via mail enabled, entering "test@m". Trace the search result handling for the mail-sharing suggestion; done means incomplete addresses no longer produce the suggestion, while a complete format such as "test@x.x" does.