Add font size support to file block or remove default font size

[Azragh]

Description

With v13.9.0 active, the file block gets a default font size of .8 em, which wasn't there before:

.wp-block-file:not(.wp-element-button) {
  font-size: .8em
}

This should be either removed or put into the users hand with the font size setting. Adjusting/overwriting this style on all the websites I used file blocks so far would be very tedious.

Step-by-step reproduction instructions

1. Create some file blocks
2. Activate Gutenberg
3. Notice difference in size

Screenshots, screen recording, code snippet

With Gutenberg v13.9.0:

Without:

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[glendaviesnz]

Getting consistent typography support across blocks is currently being looked at here.