[TASK] Improve wording of upgrade wizards in Install Tool

Change the misleading headling "Available wizards" and
switch color of progress bar to success if 100% reached.

Resolves: #85299
Releases: master, 8.7
Change-Id: I6e08da59313fe9efc51f3e4e061a4d3068cadc80
Reviewed-on: https://review.typo3.org/57272


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: David Bruchmann <davidbruchmann@gmail.com>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: Mathias Brodala <mbrodala@pagemachine.de>