[BUGFIX] Avoid exception for int label column

By casting the title column to string for the label of an TCA record an
exception caused by a strict type check is avoided when shortening the
title.

Resolves: #85729
Related: #79440
Releases: master, 8.7
Change-Id: Ie365b92ae73cd766c412d66ff7624eebbbfb3cf7
Reviewed-on: https://review.typo3.org/57776


Reviewed-by: Riny van Tiggelen <info@online-gamer.nl>
Reviewed-by: Jan Stockfisch <jan.stockfisch@googlemail.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>