Enabling fetching of UserInfoGroups breaks web-terminal

[the-technat]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug

Somehow when enabling the feature introduced in #12062 users can no longer open the web-terminal for pods and instead get an error.

To Reproduce

0. Argo CD with an OICD provider hooked up
1. Enable the web-terminal feature (has to be explicitly enabled)
2. Grant an OIDC group the role: admin in argocd-rbac-cm (could also be a permission based on AppProject, but for the sake of simplicity we just assume the user is admin)
3. Enable the UserInfoGroup feature using these keys in argocd-cm:

enableUserInfoGroups: true
userInfoPath: /userinfo
userInfoCacheExpiration: "5m"

4. Logout, Login & Verify that in redis your group informations are cached (there's a key called userinfo_response_<token.sub>)
5. Open a web-terminal for a pod that does have a shell

Expected behavior

Web-Terminal works since the users is admin in Argo CD and can see/edit everything.

If the UserInfoGroups feature is disabled the web-terminal works without issues.

Screenshots

Version

Logs

I can't see anything relevant in the logs.

[the-technat]

Since this is a feature I contributed I'm also willing to fix this bug.

But I suppose the terminal RBAC works different than the rest so if somebody could point me in the right direction where to look/start that would be awesome.