Remove the rest of `trigger_schedule` related codes

Closes #32032

See merge request !12839

Remove Inactive Personal Access Tokens list from Access Tokens page

Closes #19629

See merge request !12866

Revert "Merge branch 'revert-2c879643' into 'master'"

See merge request !12870

This reverts merge request !12633

Update the mysql2 gem to v0.4.5

See merge request !12859

Instrument Ability

See merge request !12865

Gitlab::Git shuffling and Gitaly annotations

See merge request !12849

Extract partials from the protected_branches & protected_tags views

See merge request !12864

Move find file URL out of global variable

See merge request !12846

Fixes needed when GitLab sign-in is not enabled

See merge request !12491

Fix spacing in sidebar

Closes #35035

See merge request !12844

So they are reusable for EE later

Fixed typo

See merge request !12862

Handle case when BroadcastMessage.current is nil

Closes #35094

See merge request !12860

Somehow Rails.cache.fetch occasionally returns `nil` values, which causes
this endpoint to crash.

Closes #35094

Make sure MergeRequest commit methods work when either compare_commits or merge_request_diff is set

Closes #35077

See merge request !12856

Increase width of dropdown menus

Closes #34989

See merge request !12809

Supplement Portuguese Brazil translation of Project Page & Repository Page

Closes #33672

See merge request !12156

Reload page after changing navigation preference

Closes #34968

See merge request !12833

Add more notes about developer seeds

See merge request !12836

Backport MR create service changes from EE

See merge request !12808

Part of #34903

When sign-in is disabled:
 - skip password expiration checks
 - prevent password reset requests
 - don’t show Password tab in User Settings
 - don’t allow login with username/password for Git over HTTP requests
 - render 404 on requests to Profiles::PasswordsController