[BUGFIX] Fix double-stdWrapping of GIFBUILDER's TEXT object

During extensive overhaul of stdWrap from TYPO3 v4.4 to v4.5 a
bug was introduced that led to double-stdWrapping of all
properties of GIFBUILDER's TEXT object.

Change-Id: Ib74fdc9899f3d0ee3f6fc96ffbb9c7dbc3ee01e2
Fixes: #41487
Releases: 6.2, 6.1, 6.0, 4.7, 4.5
Reviewed-on: https://review.typo3.org/20532
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind