[BUGFIX] Always return unique field list

The method DatabaseRecordList::makeFieldList()
creates a list of fields to select for a table. Since
selector.

This method however automatically adds some
management fields, such as `crdate`. As those
fields may also be included in TCA `columns`,
e.g. for sys_redirects since #94143, they may
be added multiple times, which leads to different
errors.

This is now fixed by applying array_unique to the
final field list.

Resolves: #94294
Releases: master
Change-Id: I6e5cefaa4fb5d5a3dff9581105d19618143c1e79
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69424


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>