[BUGFIX] Exclude fields without db field from advanced search

In advanced search, each field of every table that is listed in TCA
can be used to compose db queries. But if the TCA field has no
counterpart in db, the query fails.
Removing fields that are defined as type user, but without a
defined userfunc are now excluded from view to prevent this kind of
error.

Releases: master, 8.7
Resolves: #83455
Change-Id: Ib35cd7ec54e6c02c77fd85305b6cf3fe1b1979d0
Reviewed-on: https://review.typo3.org/55253


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>