Long file names collide with elements from the right side on Office Importer on Firefox

Steps to reproduce

1. Configure XWiki with LibreOffice and start it with Firefox (tested with Firefox 132)
2. Login
3. Click 'Create' button
4. Select 'Page from Office'
5. Fill a page title
6. Click 'Create' button
7. Click 'Browse' button
8. Select a file with a long name (e.g. 80 characters, like: 111111111111111111111111111111111111111111111111111111111111111111111111111last5)
9. Click 'Open' button
10. Observe the length of the box corresponding to the selected file name

Expected results

Since it's long, the file name is truncated in the middle (by displaying ...). The box maintains it's original length like it was before the file was added.

Actual results

On Firefox, the long file name is not truncated and the box expands on the right, colliding with the elements from the right side (i.e. 'Split document' checkbox and it's name).

The issue couldn't be reproduced on Edge 130 and Chrome 130.