[BUGFIX] Fix broken edit icons on cType HTML

Fix the wrong Typoscript configuration for front-end edit icons
for cType HTML (for the traditional fe-editing).

Resolves: #17493
Releases: 6.2, 6.1, 6.0, 4.7, 4.5
Change-Id: I743d8d8ee77bd76bd9ed2a12cd34817196d3719a
Reviewed-on: https://review.typo3.org/20562
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind
Reviewed-by: Markus Klein
Tested-by: Markus Klein