[BUGFIX] Prevent resetting of Package Manager packages

Due to Package Manager cleanup in https://review.typo3.org/46389/
the packageStatesConfiguration property only includes active packages.

This patch prevents resetting the packages property which should store
all available package objects to the active ones.

Resolves: #75864
Releases: master
Change-Id: I44d4e074a04cc294cacf9ec9a707b2367b57a2bb
Reviewed-on: https://review.typo3.org/47852


Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>