fix: Update GH revalidation logic to use new split repo + org name params

• fix: Update GH revalidation logic to use new split repo + org name params

Missed in original change set to resolve an issue with path encoding. This change fixes the revalidation UI to use the proper values as used in the rest of the back end which are now split.

Resolves eclipsefdn/helpdesk#5272 (closed)