[BUGFIX] Omit hostname in site auto-generation called via CLI

Invoking DataHandler in CLI (e.g. when importing data-sets) fails
due to flaws in CreateSiteConfiguration which uses $_SERVER as
fallback even when it does not contain any web-related information.

Thus, hostname and schema prefix is omitted when being called in
CLI context.

Releases: master
Resolves: #89739
Change-Id: Ic8d3e5d4dd81067f2be3fa1d092c180885ba1783
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62370


Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Susanne Moog <look@susi.dev>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Susanne Moog <look@susi.dev>