[BUGFIX] Only update metadata database row on changes

The @internal update() method of MetaDataRepository
now checks the data to be updated against the current
database row, preventing updating of the records
timestamp in case no actual update needs to be done.

Additionally, the method now returns the database row.

Resolves: #97775
Releases: main, 12.4
Change-Id: I1429605880ec815deb1d6111bc6b1686558b6f5b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/81046


Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Andreas Nedbal <andy@pixelde.su>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Nedbal <andy@pixelde.su>