[BUGFIX] Use proper TYPO3_CONF_VARS IM option

There is a copy/paste typo in LocalCropScaleMaskHelper,
which was introduced in TYPO3 v8.

The setting $TYPO3_CONF_VARS[GFX][processor_stripColorProfileCommand]
is the correct one.

Resolves: #87548
Releases: master, 9.5
Change-Id: I4f9e4f3f62e1b577a986c96a31d4438da1bc7f74
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60465


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Guido Schmechel <guido.schmechel@brandung.de>
Reviewed-by: Susanne Moog <look@susi.dev>