[BUGFIX] System environment report always says warning

Fixes: #46696
Releases: 6.1
Change-Id: Ifc8728f6d3d4a412ddd951b80ecdc83e769c5d24
Reviewed-on: https://review.typo3.org/19313
Reviewed-by: Stefan Neufeind
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn