Merge branch '26261-post-api-v3-projects-idorproject-commits-commits-does-not-work-with-project-path' into 'master'

Fix Commits API to accept a Project path upon POST

Closes #26261

See merge request !8406

Refactor discussion edit widget to have only one at a time.

Closes #23227

See merge request !8356

Removes CustomEvent polyfill and tests

See merge request !8400

Decreases font-size on login page

See merge request !8454

25701 standardize text colors

Closes #25701

See merge request !8383

Removes unneeded `window` declaration in environments related code

Closes #25725

See merge request !8456

Absorb gitlab_git

Closes #24374

See merge request !8447

UX Guide: add section on search box

See merge request !8429

UX Guide: Add new primary and secondary text colors

See merge request !8449

Explain why we have this monkey-patch

See merge request !8329

Add API route slack slash commands

Closes #25954

See merge request !8362

Removes invalid html and unneeded CSS to prevent shaking in the pipelines tab

Closes #26278

See merge request !8411

Terminal: Add TextEncoder and TextDecoder in terminal bundle.

Closes #25977

See merge request !8450

Since there are multiple instances of text editors on the current fixture file we will use the one that creates a comment.

if we are in the Merge Requests page, this change will clone existing note-edit-form and add a mr-discussion-edit-form class to cloned element so we will have two note-edit-form in place. One for Discussions tab one for Changes tab.

For MR page, we basically need two note-edit-form because you may want to edit your comment in both tabs at the same time and we shouldn't remove or discard note-edit-form in other tab.

Fix ImplicitDiv Haml lint failure

See merge request !8441

Clarify git housekeeping

See merge request !8373