[BUGFIX] Fix null coalesce evalutation in PageLayoutView::getLocalizedPageTitle()

This commit fixes a usage of the null coalesce operator within a condition.

Resolves: #88092
Related: #84375
Releases: master, 9.5
Change-Id: Ic34fb492e66eb224d0e617405e8ae2be69a16aa4
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60400


Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Reviewed-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Reviewed-by: André Schließer <andy.schliesser@gmail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Mona Muzaffar <mona.muzaffar@gmx.de>
Tested-by: André Schließer <andy.schliesser@gmail.com>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>