[ Operator Redesign ] fix: Argocd sso status resets to Unknow if spec.sso is set to nil

[anandrkskd]

What type of PR is this?

/kind bug

What does this PR do / why we need it: SSO status didn't revert to unknown status if argocd spec.sso is set empty, with this PR if no provider is set for SSO, the default status is set to unknown

Have you updated the necessary documentation?

• [ ] Documentation update is required by this PR.
• [ ] Documentation has been updated.

Which issue(s) this PR fixes:

Fixes #?

How to test changes / Special notes to the reviewer: