Refactor Project#expire_caches_before_rename method

What does this MR do?

This MR refactors Project#expire_caches_before_rename.

Now that there are 3 repositories being treated in the same way, we can iterate over them to make this method more concise.

This suggestion was raised in !31165 (comment 338069911).

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

• [-] Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done