Re-organize schema. Drop protected from runner. Add access_level to runner. Drop protected from pipeline. Add protected to ci_bilds.

Solution 1. Persists protected(ref) flag on ci_pipelines table. builds_for_shared_runner and builds_for_specific_runner read the flag instead of executing protected_for? one by one.

Issue discussions Vue refactor

See merge request !12069

Ensure `issuables_count_for_state` returns the requested state count

Closes #37353

See merge request !14005

We were incorrectly stubbing `Issues::MoveService#execute`. This only
caused a failure when another spec caused it to be autoloaded --
`spec/controllers/projects/issues_controller_spec.rb` in this case.

Add settings for minimum key strength and allowed key type

Closes #17849

See merge request !13712

Remove issuable finder count caching

See merge request !13959

Make pipeline dropdowns consistent

See merge request !13530

Reduce duration and complexity of spec/features/issues/filtered_search/filter_issues_spec.rb

See merge request !13973

Optimize notification emails specs

See merge request !13986

Fixes the fly-out navigation flashing in & out

Closes #37022

See merge request !13929

The assignee wasn't important to the test, and shortening the query
allowed us to avoid the "horizontal scroll" failure without having to
stub the `sidebar_collapsed?` helper.

We now document that fact.

We were essentially testing "all of the filters" four times, so now we
just do it once at the top level.

Three issues were only used in one test each, and one milestone with its
accompanying issue were only used in one test, so we now scope those
locally.