[BUGFIX] Add missing file search to file link handler

The FileLinkHandler, used to select a file
in the link wizard does now also allow to
search for files, like it's also possible
in the FileBrowser already.

Resolves: #103241
Releases: main, 12.4
Change-Id: Icf3ded3d317e5fbdbd4bc17db0e5969f7b2a055f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83111


Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>