[BUGFIX] Rendering inline TCEforms without AJAX is broken

When loading tt_content as an inline record WITHOUT using AJAX,
some additional broken fields are rendered.

Change-Id: Ia5aaec79d0fb7c3266ea4f3a0c04d65b1af4b201
Fixes: #39048
Releases: 6.2, 6.1
Reviewed-on: https://review.typo3.org/12904
Reviewed-by: Alexander Opitz
Tested-by: Alexander Opitz
Reviewed-by: Stefan Neufeind
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters