Send saml logout response even when validation errors happen

[1livv]

solves #14635

[jzheaux]

Thanks for the PR, @1livv. This is going to take a little bit more work to maintain backward compatibility and also ensure that the APIs progress naturally. I'll get back to you soon with recommendations.

[jzheaux]

Thanks @1livv! This is very helpful. I've left my feedback inline.

[jzheaux]

Hi, @1livv, are you able to make the requested changes?

[1livv]

Hey @jzheaux this slipped off my radar, i'll take a look in the next days.
Sorry for the delay

[jan-knoblich]

@1livv I'd be willing to take care of the change requests if you are ok with this

[1livv]

Yes, that would be great thank you @jan-knoblich !!

[jan-knoblich]

@1livv Could you Sync your repository with the main one? Otherwise I will have to create a new one. There are some changes that impact the changes in this PR
This explains how to sync: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[jzheaux]

@1livv and @jan-knoblich, I've rebased the PR, thanks for your patience.

Would either of you like to apply the listed changes? If I don't hear from you one way or the other by next week, I'll go ahead and provide a polish commit myself.

[jzheaux]

Thanks, @1livv! This is now merged into main. I also added fc7e6bced09827233a409148a5f9adc7fb5ec198 to update related documentation.