It ensures that the request will not be overwritten by the spinning icon
on fast servers.

Before the changes, the image cropping tool triggered a Console Error
"Uncaught TypeError: Cannot read property 'cropArea' of undefined at
ImageManipulation.init (ImageManipulation.js)."

Resolves: #84499
Releases: master, 8.7
Change-Id: Ic2208ba43d0976a1ba9674d68e5d861e89619d1a
Reviewed-on: https://review.typo3.org/56469


Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>