[BUGFIX] Fix visual glitches in tile view affecting Firefox

`text-overflow: ellipsis` only works in Firefox if the parent element
has an explicit width. Therefore, `button` and `a` elements are now set
to a width of 100%. This also fixes an issue where images appear to be
squeezed in Firefox.

Resolves: #100743
Resolves: #100761
Releases: main
Change-Id: I750f553b0fbdc0a05652074b785ec5028d3937bb
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78876


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Benjamin Kott <benjamin.kott@outlook.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Daniel Siepmann <coding@daniel-siepmann.de>
Tested-by: Benjamin Kott <benjamin.kott@outlook.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>