[BUGFIX] TCA pages:subtitle is missing eval=trim

The TCA pages misses 'trim' as eval setting for column subtitle.
The title field and the subtitle field of pages_language_overlay
already have a trim setting applied.

Releases: 6.2, 6.1, 6.0, 4.7, 4.5
Resolves: #55113
Change-Id: Icfa441c0010214e3718ed6923ffd7443ce032f81
Reviewed-on: https://review.typo3.org/26933
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Marcin S?gol
Reviewed-by: Oliver Klee
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer