[BUGFIX] Send "Set-Cookie" HTTP header as multi line

To set multiple cookies at the same request, the "Set-Cookie" header
must be sent as multi line. The default behavior, a comma separated list,
will cause that only the first cookie is set.

Resolves: #88482
Releases: master, 9.5
Change-Id: Ife4dfeb9e4e7c0452d8da10740450c8cbd26ac3e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60867


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>