To ensure a frontend build is completely free of any uncommitted
changes, the Bamboo build job checking for an unclean state executes a
full frontend build now.

Resolves: #89000
Releases: master, 9.5, 8.7
Change-Id: I5c8d285171b20753258da3095bc758e539362486
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60766


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>