[TASK] Download export file by PropagateResponseException in EXT:impexp

Since patch #94316, when downloading a file in the TYPO3 backend,
a PSR-7 response object should be created instead of using header()
and die().

Resolves: #94916
Releases: master
Change-Id: Ie99950636084358aa8b07e8a1595f5041a3808ff
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70673


Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Benni Mack <benni@typo3.org>