* Test relies on xdebug, which is not available on CI, this
  test is never executed there.
* Since the low level API header() is tested, the test
  additionally needs to fork a php process to do it's thing.
  This is ugly for a unit test.
* Turning the test into a functional test won't improve the
  situation since the response emitting is not done with
  functional sub requests.
* The skip logic breaks with xdebug 3.0 using xdebug.mode=off.

Resolves: #93598
Releases: master, 10.4, 9.5
Change-Id: Ibab9452bdcbc83228c1445db1a92b42db54dc192
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/68136


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>