[Backport release_3.28] QGIS Server: OGC API Features updates

[qgis-bot]

Backport #8322
Authored by: @JakobMiksch

[DelazJ]

@elpaso these changes are also true in 3.28, right?

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[JakobMiksch]

@DelazJ yes, they are

[github-actions]

The QGIS project highly values your contribution and would love to see this work merged! Unfortunately this PR has had no activity in the last 14 days and is being automatically marked as "stale". If you think this pull request should be merged, please check - that all comments by reviewers have been addressed - that there is enough information for reviewers, in particular

• link to any issues which this pull request fixes
• add a description of workflows which this pull request fixes
• add screenshots if applicable
  In case you should have any uncertainty, please leave a comment and we will be happy to help you proceed with this pull request. If there is no further activity on this pull request, it will be closed in a week.