[BUGFIX] Don't create package base paths anymore

The Package Manager created the package base paths by itself.
This could lead to errors if directory creation is forbidden
on the PATH_site level.

This fix disables the folder creation and removes the folder
from package base paths if the folder is not available.

Fixes: #52814
Releases: 6.2
Change-Id: I67acad6101ca54dd4c45604bcfc91da490fdc43a
Reviewed-on: https://review.typo3.org/24779
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Thomas Maroschik
Tested-by: Thomas Maroschik