feat: Adding the domain_hint as an optional field in OIDC configuration

[nikzayn]

Description:
In this enhancement, I am updating the configuration for the OIDC in which we will add domain_hint as an optional field to enhance authentication parameters.

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• I've included "Closes [Add domain_hint option in oidc configuration #18066]" or "Fixes [Add domain_hint option in oidc configuration #18066]" in the description to automatically close the associated issue.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by [DCO]
• My build is green (troubleshooting builds).
• I have added a brief description of why this PR is necessary and/or what this PR solves.

[pasha-codefresh]

LGTM, thank you!