[BUGFIX] Re-enable environment status report in Backend

The condition that checks for CLI mode in the ext_tables.php of
the install tool is fixed.

The EnvironmentStatusReport is now active in the Backend and
not on CLI.

The additional checks added in #78786 are not required any more
and are reverted.

Change-Id: I4d364fc08c68c7c25d9210c08b813247bee7d47f
Resolves: #78854
Relates: #78786
Releases: master, 7.6
Reviewed-on: https://review.typo3.org/50825


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>