[BUGFIX] CommandController is not executed at same time

To execute more than one different CommandController at
the same time, every execute call has to use its own request
and response object. Otherwise the request would be already
dispatched for the further tasks.

Fixes: #55362
Releases: 6.2, 6.1 , 6.0
Change-Id: I62ba9cbd2c47a59c7243a1017716b28526bcf6ea
Reviewed-on: https://review.typo3.org/27654
Reviewed-by: Markus Klein
Tested-by: Markus Klein