[BUGFIX] Adjust itemsProcFunc for sys_file_collection

This patch corrects fetching the storage uid from the row data for
sys_file_collection

Resolves: #72276
Releases: master
Change-Id: I73ef3e5121249942cb12859081194ba499559559
Reviewed-on: https://review.typo3.org/45325


Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Tested-by: Morton Jonuschat <m.jonuschat@mojocode.de>
Reviewed-by: Frank Nägler <frank.naegler@typo3.org>
Tested-by: Frank Nägler <frank.naegler@typo3.org>