Backend optimizations for startup Calls

Removed also the condition in head
Fix for application_helper spec startup_calls

Basic test setup for REST calls to start early
Integrated Startup REST Calls into Repository View

Lint fixes for startup_js
Spec Fix and suggested optimizations for Startup.js

Needs to be a var for Startup.js
Spec setup for startup calls

Docs: Add info on clearing index status

See merge request gitlab-org/gitlab!34572

Quarantine elasticsearch test

See merge request gitlab-org/gitlab!34726

Alert text search docs

See merge request gitlab-org/gitlab!34701

Add rubocop creation process

Closes #220374

See merge request gitlab-org/gitlab!34754

Add multiline GitLab CI scripts command details

Closes gitlab-runner#2224

See merge request gitlab-org/gitlab!32917

Move codeowner validation checks into Commits::CreateService

See merge request gitlab-org/gitlab!34471

Iteratively, we've pushed these checks into a number of different
locations, however having a unified, single-location for these checks is
for more sustainable into the future. By moving the existing "web
request" checks into Commits::CreateService, we can remove the existing
checks previously added to the file editor, enable checks on the Commits
REST API (create/update/delete, cherry-pick, revert), and can remove the
:skip_web_ui_code_owner_validations ermergency workaround

Don't compile production assets upon backstage changes

See merge request gitlab-org/gitlab!34756

Merge branch '27799-fix-the-following-style-lint-errors-and-warnings-for-app-assets-stylesheets-pages-sherlock' into 'master'

Fix stylelint warning in sherlock.scss

See merge request gitlab-org/gitlab!34685

Search plain text in alert list frontend

See merge request gitlab-org/gitlab!34631

Run migration & geo tests in rspec foss-impact

Closes #222802

See merge request gitlab-org/gitlab!34694

Improved Praefect dataloss subcommand documentation

See merge request gitlab-org/gitlab!34454

Add version details for notification feature flag

See merge request gitlab-org/gitlab!34816

Geo: Document promotion-preflight-checks command

See merge request gitlab-org/gitlab!32570

Added package file replication

Closes #213656

See merge request gitlab-org/gitlab!34712

Refactor specs to help with flakiness

See merge request gitlab-org/gitlab!34776

Updating image for entering weights for repository storages

See merge request gitlab-org/gitlab!34819

Add section to name uniqueness validation

See merge request gitlab-org/gitlab!33119

Copy updates for suggest_gitlab_ci_yml Popover

See merge request gitlab-org/gitlab!34531

Minor edit of new content

See merge request gitlab-org/gitlab!34806

Fix version text when feature flag removed

See merge request gitlab-org/gitlab!34815

Update required Git version

See merge request gitlab-org/gitlab!34691

Update version text and add stage metadata

See merge request gitlab-org/gitlab!34812

Fixes one version text line, and adds missing
stage metadata to related files in the same dir

Add Fail Fast Testing documentation page

See merge request gitlab-org/gitlab!34591