This PR improves the row/box with signature information used on commit and tag pages: [commit example](096a03eb42), [tag example](https://codeberg.org/forgejo/forgejo/releases/tag/v1.4.0-rc2). It improves padding consistency, mainly on mobile, and cleans up code a bit. Instead of relying on min-height the box now uses paddings so overflown text is never too close to borders.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8984
Reviewed-by: Beowulf <beowulf@beocode.eu>
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: 0ko <0ko@noreply.codeberg.org>
Co-committed-by: 0ko <0ko@noreply.codeberg.org>