Take query parameters for url advertised in capabilities from the original request

[mhugent]

If QGIS Server is accessed by a rewrite-rule, the original request usually does not contain the map parameter, however the rewritten request does. To decide if the map-parameter has to be added to the url advertised in GetCapabilities, the original request has to be considered (not the rewritten request).

[elpaso]

LGTM, does this deserve a test (mainly to protect for accidental changes)?

[mhugent]

LGTM, does this deserve a test (mainly to protect for accidental changes)?

Yes, a unit test makes sense here. Going to add it

[github-actions]

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[github-actions]

While we hate to see this happen, this PR has been automatically closed because it has not had any activity in the last 21 days. If this pull request should be reconsidered, please follow the guidelines in the previous comment and reopen this pull request. Or, if you have any further questions, just ask! We love to help, and if there's anything the QGIS project can do to help push this PR forward please let us know how we can assist.

[mhugent]

I'm reopening this PR because I think this bug might be a problem for a lot of productive deployments of QGIS Server

[agiudiceandrea]

@m-kuhn, why both queued_ltr_backport and release-3_22 branchee backports?

[m-kuhn]

Shaky hands after too long a conference day 😵‍💫😜