[TASK] Avoid invalid object type in FileExtensionFilter

filter() retrieves 'DataHandler|DatabaseRecordList $dataHandler'
as argument to call $dataHandler->deleteAction on it.
DatabaseRecordList and extending classes have no such method.

Resolves: #104248
Related: #98479
Releases: main
Change-Id: I2fd425c5503a546e6cbf8ed3dae94145e2cb85d7
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84994


Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>