Broken master issues need to be worked on
If a maintainer wants to merge an unrelated MR when master is broken, they need to check that an issue has been created and is being worked on before merging.
Comes from https://gitlab.com/gitlab-org/release/framework/issues/106.
/cc @gitlab-org/maintainers/rails-backend @annabeldunstone @ClemMakesApps @fatihacet @filipa @iamphill @kushalpandya @mikegreiling @timzallmann