[Bug]: Unified search triggers 2x request for the files search provider

[kesselb]

⚠️ 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

A request for the unified search, without any filter, triggers a request for the files search provider two times.

Steps to reproduce

1. Go to files app
2. Open network inspector
3. Click on the search icon
4. Enter a search string
5. See two requests for /ocs/v2.php/search/providers/files/search with the same data and response.

Expected behavior

Only one request ;)

Nextcloud Server version

master

Additional info

No response