Geo - Change wiki legacy verification code to maintain both tracking tables

What does this MR do and why?

Part of #367928 (closed), this MR:

1. Update the Geo::RepositoryVerificationPrimaryService to track the wiki verification state for project wiki repositories on both tables project_repository_states and project_wiki_repository_states.
2. Update the Geo::RepositoryVerificationSecondaryService to use the primary wiki checksum from the ``project_wiki_repository_statestable if present or fallback to theproject_repository_states` table.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

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Related issues

Related to #367928 (closed)