Exclude archived projects in search results by default

What does this MR do and why?

Users have been requesting to exclude archived projects from the search results for the project scope.

How

• Add a filter include_archived - added to CE since both basic and advanced search will use it
• Exclude archived projects if the filter is not added as a parameter
• Include archived projects if the filter is added as a parameter
• Basic search uses the archived field on projects
• Advanced search searches use the archived field already present in Elasticsearch

Next steps

• Document the default behaviour and how to include archived projects using the parameter
• Frontend: [Projects] Add a visual toggle for including ar... (#413237 - closed)
• API parity: Update projects search API to filter by archive... (#413239)

Screenshots or screen recordings

Type	Level	Before	After	include_archived=true
Basic	Global
Basic	Group
Advanced	Global
Advanced	Group

How to set up and validate locally

1. Do a basic search (add &basic_search=true to the url) for an existing project and verify that the project is returned in search results
   1. Without selecting a group/project
   2. With a group selected
2. Archive the project
3. Do the same basic searches and verify that the project is not returned
4. Unarchive the project
5. Do an advanced search (make sure Elasticsearch is setup) for the project and verify that the project is returned
   1. Without selecting a group/project
   2. With a group selected
6. Archive the project
7. Do the same advanced searches and verify that the project is not returned

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #18262 (closed)