[BUGFIX] Fix position of TCEforms required field icon

If a palette is placed directly after a form field the icon to
open the pallete is placed inside the formfield wrapper. As result
the position of the required field icon is wrong.

This patch moves the palette icon outside of the wrapper.

Resolves: #59865
Releases: 6.2, 6.3
Change-Id: I35a3d4728a0dfb5ed315731366cc5ca04a7aa87e
Reviewed-on: https://review.typo3.org/31130
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Marcin Sągol
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters