[TASK] Increase size of title + teaser field

Make the title and teaser fields bigger.

Change-Id: Ibd29bcc54cd90d356039e74f44b85f4b7a917b18
Resolves: #55667
Reviewed-on: https://review.typo3.org/27353
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer