[BUGFIX] Replace undefined variable with locallang key

The title of the "edit column" button in the page
module is now using the correct locallang key
instead of an undefined variable.

Resolves: #99339
Releases: main, 11.5
Change-Id: Ic3a44174da62d25de06e1673dd5748dedf4aff0a
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77132


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