Edits for CTRT and style

See merge request gitlab-org/gitlab!56257

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/300312

Allow project admin to read approval rules when project is archived

See merge request gitlab-org/gitlab!55929

Reconcile source installation and upgrade docs

See merge request gitlab-org/gitlab!55170

This change brings it in line with the order during install and makes
the workhorse installation not error out, since it depends on new gems
being installed first

Record trial status widget experiment variant assignments

See merge request gitlab-org/gitlab!53301

Add Jira status to sidebar on Jira issue details page

See merge request gitlab-org/gitlab!56065

even if project is archived / merge requests
not allowed.

Update tier badging for Keyword reference page

See merge request gitlab-org/gitlab!56248

Merge branch '293972-geo-framework-persistent-failures-block-slow-down-retries-of-transient-failures' into 'master'

Geo Framework: Persistent failures block

See merge request gitlab-org/gitlab!54585

BulkImports: Add more information to the logs

See merge request gitlab-org/gitlab!55866

Remove Starter tier icon from Server Hooks page

See merge request gitlab-org/gitlab!56271

Log individual user usage of Slack service [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!54347

This uses HLLRedisCounter to log usage
for individual users of slack service
each time a individual user triggers an action
it should increase the counter for this action

Move the `record_experiment_group` and `experiment_enabled?` helper
method calls into the view to avoid the side-effect of recording an
experiment subject as part of a single, consolidated helper method.

Reduce the logic necessary for the view down to two helpers:

1. show_trial_status_widget?(group)
1. trial_status_widget_experiment_enabled?(group) ← has a side effect

Also fixed the `new_subscriptions_path` to use the root_group rather
than the group.

- Record participating top-level groups as ExperimentSubject records
  - record the variant received (candidate or control) as well
- Record click events on the widget itself
- Record an event whenever the popover is displayed
- Record click events on each of the CTA buttons in the popover

Clarify the merge process when master is broken

See merge request gitlab-org/gitlab!56207

Also, cross-link to the handbook process.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Add link to merge request in email

See merge request gitlab-org/gitlab!56064

Add Free tier badge to Secret Detection page

See merge request gitlab-org/gitlab!56218

Implement spot edits for Cloudwatch page

See merge request gitlab-org/gitlab!56276

Merge branch '300750-add-missing-reviewers-information-to-merge_request_unmergeable_email' into 'master'

Add reviewers detail to merge request unmergeable email

See merge request gitlab-org/gitlab!55582

We currently have Assignee information only on text version so we'll
follow the same reasoning to be consistent.

Improve notes on enabling the secure_security_and_compliance_configuration_page_on_ce feature flag

See merge request gitlab-org/gitlab!56234

Updates the page to better reflect our current styling.

Remove help icon for Starter tier reference.

Fixes a few minor style aspects

See merge request gitlab-org/gitlab!56261

Remove `vue_project_members_list` feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!55902

Merge branch '207467-add-gradle-setup-and-install-commands-to-the-package-details-page-2' into 'master'

Add Gradle instructions and instruction selector to package details

See merge request gitlab-org/gitlab!55738

- source
- tests

Centralise if we should skip sending notifications [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!56197

This covers #new_mentions_in_issue
and #new_mentions_in_merge_request.

User mentions not working for usernames ending in `_`

See merge request gitlab-org/gitlab!56039

Update group code coverage projects query

See merge request gitlab-org/gitlab!56124

Update experiment tracking template to include recommended tracking resources

See merge request gitlab-org/gitlab!55992