Fix tags pages erroring for projects with private pipelines

What does this MR do?

MR to target next patch release for 13.6

Cherry-pick of !47735 (merged) with a changelog

Related: #283437 (closed)

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.