[BUGFIX] Add parenthesis where operation result is enforced

The coalesce operator has a relatively low precedence over other
operators. If used as part of other expressions, it is almost always
necessary to wrap it in parenthesis. Otherwise unexpected behaviour or
undefined array key errors (in PHP 8.0) may occur.

Resolves: #95482
Releases: master, 10.4
Change-Id: I4ddecdbeab03c215477f77742674ded01bc29257
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71449


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benjamin Franzke <bfr@qbus.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>