[FEATURE] Report links to disabled linkhandler records

A new TSConfig setting is introduced to mod.linkvalidator that is called
linkhandler.reportHiddenRecords.

If this setting is enabled an error will be triggerd in the linkhandler
link checker if a linked record is not enabled.

Resolves: #54519
Releases: master
Change-Id: Ib95cff1f9bdc67b0636cf38e6d9f33a8cbbdff75
Reviewed-on: http://review.typo3.org/26503


Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>