Backend: Always return results for project scoped search if project is archived

Background

Archived result filtering was added for merge requests, issues, and notes in the following issues. The filtering should only be done at the global and group level. If a project scoped search is done, the results should always be shown (archived or not archived).

• Backend: Allow archived projects to be excluded... (#414905 - closed)
• Backend: Allow archived projects to be excluded... (#414904 - closed)
• Backend: Allow archived projects to be excluded... (#414903 - closed)

Proposal

Refactor any project scoped searches in basic and advanced search for the scopes (issues, notes, merge_requests) to not filter projects if the project is archived.