Sort latest changes from master

See https://gitlab.com/gitlab-org/frontend/eslint-plugin/-/issues/18
for more information.

Sort JavaScript imports in the CE code
to match our future ESLint configuration.

https://gitlab.com/gitlab-org/gitlab/-/issues/293891

Part of our prettier migration; changing the arrow-parens style.

Add emojis to tribute autocompletion as part of migrating from
jQuery-based at.js.

https://gitlab.com/gitlab-org/gitlab/-/issues/230977
https://gitlab.com/groups/gitlab-org/-/epics/4002

Add epic autocompletion as part of migrating from jQuery-based
at.js to tribute

Refactor GlMentions to ready it for adding Epics autocomplete
which is EE

This change adds new reference filter for Vulnerability:
[vulnerability:1]

We are migrating from jQuery-based at.js to tribute behind
the feature flag :tribute_autocomplete. This commit
adds snippets autocomplete to tribute.

Added milestone autocompletion to tribute so that we are
a step closer to replacing the old at.js jQuery library
with tribute for @mentions autocompletion

Merge branch '264441-revert-add-special-reference-for-vulnerabilities-on-frontend' into 264441-revert-special-references-for-vulnerabilities

**What happened?**
There was an issue being caused by Vue rerendering
a class that the vanilla JS gl_form.js was setting
which was critical to dropzone behavior.

This commit updates the `textareaValue` prop of the `<markdown-field>`
component to always be required, and removes some logic that attempted
to get the value of the child `<textarea>` in a "fancier", alternate
way.

This commit fixes the Markdown preview on the New Release page, the
Edit Release page, and the New Snippet page.

This change adds ability to use ^ as a special reference in Markdown
Editor.

Convert to tribute since atjs is no longer maintained and
dependent on jquery

This enables an eslint rule to prevent
usage of v-html to avoid potential
XSS vulnerabilities

This replaces all the usages of ~/vue_shared/components/icon.vue with
the corresponding GitLab UI component within the `vue_shared` directory.

In a previous MR [0] we already replaced the internal implementation
with the GitLab UI component. This should allow us to migrate all usages
without any test failures relating to the differences in their
implementation.

The actual deletion of the file will be done in a follow-up in case we
have missed an instance or someone introduces a new one in the
meanwhile.

[0]: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/38778

Replaces the default export flash
function with the newCreateFlash.

Fix outstanding flash imports

Updates specs and replaces outstanding
imports for `Flash`

Fixes additional specs

Updates the remaining calls to different
flash methods, except for the window.Flash
method since this will break .erb templates

Update gray-700 hex value and find and replace all gray-700
with gray-500.

Convert to tribute since atjs is no longer maintained and
dependent on jquery

Convert to tribute so we can remove the unmaintained
jQuery-based atjs library

This removes the prepend-top-default CSS
class and replaces it for the gl-mt-3
utility class from GitLab-UI

As part of the refactor from at.js to tribute, the new
tribute component was added to the Issues description, note
and comment textareas

This removes the append-bottom-default CSS
class and replaces it for the gl-mb-3 utility
class from GitLab-UI

Change 'Proceed with caution.' to 'They will all receive a notification.'

Update Compress Icon to size 48

See https://gitlab.com/gitlab-org/gitlab/-/issues/205390 for reference.

https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25108

(cherry picked from commit 1dd7adc634e214208b0502f47116d6559dc471b0)

Affected editors are issue/MR discussions, wiki editor, milestone
editor, etc. Also, to support indentation, these editors need to have a
custom undo stack.

i18n linting for .vue files under the
app/assets/javascripts/vue_shared directory