[BUGFIX] Linkhandler - access to data outside editors pagetree

Respect options.pageTree.altElementBrowserMountPoints in RecordLinkHandler

Resolves: #82250
Releases: master, 8.7
Change-Id: Ic46544c35076439b38b80656c5702ff7c9d0f87b
Reviewed-on: https://review.typo3.org/54852


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>