[FEATURE] Add constraint hook in DatabaseRecordList->makeSearchString

A newly introduced hook in DatabaseRecordList->makeSearchString allows to
modify the constraints which are applied to the search string.

Resolves: #71911
Releases: master
Change-Id: I7513ce9c17a9dfef76caa4e78a61f8efed21d540
Reviewed-on: https://review.typo3.org/48090


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: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>