Refactor ProjectsFinder#init_collection and GroupProjectsFinder#init_collection

Closes #33632

See merge request !12135

Do not enable prometheus metrics when metrics folder is missing

See merge request !12263

Remove changelog entry

See merge request !12309

Re-instate is_admin flag in users API is current user is an admin

Closes #33260

See merge request !12211

Remove backticks from chat messages because they're not rendered as code

See merge request !12276

Fixed filtered search clear button being off-center

Closes #33912

See merge request !12304

Revert sticky confidential header

Closes #33840

See merge request !12307

Prepare 9.3 RC5

See merge request !12283

Stop showing task status if no tasks are present

Closes #33880

See merge request !12303

Fix note highlight being added when you don't have a URL fragment hash #note_xxx

Closes #33916

See merge request !12293

Fix hover style for emoji button on parallel diff view

Closes #33865

See merge request !12281

Fix issue description syntax highlighting and math rendering

Closes #33877

See merge request !12282

Restored missing function inside dropzone_input.js

Closes #33836

See merge request !12279

Resolve '33594-disable-autocomplete-on-snippet-comments' conflicts

See merge request !12284

This was renamed in 9.4,
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11811

Disable autocomplete on snippets comments

Closes #33594

See merge request !12108

Enable autocomplete on project snippets

Closes #33911

See merge request !12286

Adjust position and wording for related issues in merge requests

Closes #33652

See merge request !11759

Re-enable autocomplete for milestones, tags, releases, and wiki

Closes #33598

See merge request !12110

Add info about artifacts object storage in docs

See merge request !12208

If migrations are pending, make CurrentSettings use existing values and populate missing columns with defaults

See merge request !12253

Docs permissions for group labels

See merge request !12269

Reduce wait timings for Sidekiq jobs

See merge request !12270

Don't display comment on unchanged line on both sides in parallel diff

Closes #33864

See merge request !12275

Prepare 9.3 RC4

See merge request !12260

Issue board docs

See merge request !12197

Jira integ docs

See merge request !12196

Confidential issues redesign docs

See merge request !12195

Convdev docs

See merge request !12189

Update ruby metrics endpoint text to be clearer

See merge request !12157

Support a configurable Rails asset_host to allow for CDNs

See merge request !12102

Allow to access statuses for external CI services

Closes #30714, #29369, and #15220

See merge request !11176

Show private subgroups if member of parent group

Closes #32135

See merge request !11764

correct ByAuthor translation in commit box

Closes #33819

See merge request !12256

Resolve "Missing translations for the project & repository pages" conflicts

See merge request !12243