[TASK] Set display fields during DatabaseRecordList start

In order to ease the usage of DatabaseRecordList in core,
the setDisplFields() call is not needed and can be handled
within the start() method directly. The method calls
are thus removed from the calling code.

Resolves: #101859
Releases: main, 12.4
Change-Id: Id7df77c9e5e301ea31eccced3c25f13ff9a44833
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/80905


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Benjamin Kott <benjamin.kott@outlook.com>
Tested-by: Benjamin Kott <benjamin.kott@outlook.com>