Fix GitHub importer performance on branch existence check

Closes #33259

See merge request !12324

Improve build stages reference migration

Closes #33866

See merge request !12337

Rebuild the dynamic path before validating it

Closes #33746

See merge request !12213

Backport "check_project_feature_available!" from EE and use it for CE controllers

See merge request !12305

Disable statement timeout in CI pipelines migration

See merge request !12268

Revert "Merge branch 'winh-merge-request-related-issues' into 'master'"

See merge request !12354

Don't expand CI_ENVIRONMENT_URL so runner would do

Closes #34008

See merge request !12344

Otherwise we won't validate updates to the path. Allowing users to
change the path to something that's not allowed.

Enable Style/DotPosition Rubocop 👮

See merge request !11965

Disable environment list polling as it breaks deployboard

See merge request !12347

This reverts commit 6ac777a7, reversing
changes made to 025cbc2a.

Remove registry image delete button if user cant delete it

Closes #33837

See merge request !12317

CI_ENVIRONMENT_SLUG is also available. It won't be
recursive because we're not putting this value in the variables.

Replace 'create.feature' spinach test with an rspec analog

See merge request !12343

# Conflicts:
#   db/schema.rb

Add index for head pipeline

See merge request !12273

Because that's the only place we need it.

Replace invalid chars while seeding environments

Closes #30855

See merge request !12267

Fix edit button for deploy keys available from other projects

Closes #33878

See merge request !12301

And make sure CI_ENVIRONMENT_URL comes last so all
variables would be available whenever the runner is
trying to expand it.

This is an alternative to !12333

Fix broken relative URL in prometheus docs

Closes #34050

See merge request !12340