In a desktop browser, the note titles don't resize properly in list

When the app is opened, there is a pane with the list of notes. If I resize that pane the note titles don't use the space properly:
a) if I make it narrower, they are shrinking properly
b) if I make it wider, the titles won't use the extra space (capped at 360px)

Steps to reproduce

1. Open the app in a desktop browser
2. Resize (make it wider) the note list pane
3. Observe that the extra space is not used

Expected behaviour

The note titles should use the extra space.

Actual behaviour

The note titles aren't using the extra space.

Screenshots

Bad:
https://github.com/user-attachments/assets/7967bda6-c2de-42bc-a313-a022f4df7812

Good (tweaked css locally):
https://github.com/user-attachments/assets/e4c34841-61da-4aa0-a560-90c72d061185

Server

Please complete the following information.

• Notes app version: 6.0.1
• Nextcloud version: 34.0.1
• OS: ?
• Web server: ?
• PHP version: ?
• Database: ?

Nextcloud configuration:

Client

Please complete the following information.

• Browser (incl. version): Floorp Version 12.15.2@152.0.2 (Firefox derivative)
• OS: Fedora 43

Log files

Add relevant parts of your nextcloud.log and/or your browser's JavaScript console here.

Reproduce the issue in the desktop browser by resizing the note list pane wider, then inspect the note-title styling and the local CSS change shown in the report. Done means note titles expand into the available pane width instead of remaining capped at 360px, while still shrinking correctly when the pane is narrowed.