[BUGFIX] Use state "excludeFromUpdates" in update check

Do not offer update for extensions with state "excludeFromUpdates"

Change-Id: Ic3aaf85a64fe23f5aede42a7949f4137d468675f
Fixes: #35126
Releases: 4.8, 4.7, 4.6, 4.5
Reviewed-on: http://review.typo3.org/9827
Reviewed-by: Tolleiv Nietsch
Tested-by: Tolleiv Nietsch
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe
Reviewed-by: Xavier Perseguers
Tested-by: Xavier Perseguers
Reviewed-by: Sebastian Fischer
Reviewed-by: Stefan Galinski
Tested-by: Stefan Galinski