[TASK] Cleanup CLI handling of CLI commands

The new _CLI_ user authentication is now explictly
set and required in each command (if a user is needed)
during runtime, and not done by the bootstrap anymore,
so this needs to be called separately.

Additionally, some cleanups to the new
CommandLineUserAuthentication is made.

Resolves: #79260
Releases: master
Change-Id: I6a882d083ec6fd878519c1472702f2a724bd7ed3
Reviewed-on: https://review.typo3.org/51248


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>