[BUGFIX] pages.shortcut suggest wizard should not suggest itself

Make it impossible to select the page you are currently
working on within the suggest wizard result set.

Releases: master, 8.7
Resolves: #86412
Related: #54867
Change-Id: Ibeaacf86061f79cc3d75f181466e5caf96657401
Reviewed-on: https://review.typo3.org/58428
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>

typo3/sysext/core/Configuration/TCA/pages.php

@@ -501,7 +501,8 @@
                 'minitems' => 0,
                 'suggestOptions' => [
                     'default' => [
-                        'additionalSearchFields' => 'nav_title, alias, url'
+                        'additionalSearchFields' => 'nav_title, alias, url',
+                        'addWhere' => ' AND pages.uid != ###THIS_UID###'
                     ]
                 ],
                 'default' => 0