[BUGFIX] Finalize rowDescription for sys_file_collection

Add missing TCA configuration for descriptionColumn in
sys_file_collection records. The database column already
exists in ext_tables.sql.

Change-Id: I696e982145604114181240bef321683569187bcd
Resolves: #84093
Releases: master, 8.7
Reviewed-on: https://review.typo3.org/55953


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