workflow:rules:auto_cancel

Summary

As a follow-up from Improving canceling redundant pipelines with `i... (#412473 - closed), we need to implement this;

default:
  interruptible: true

workflow:
  auto_cancel:
    on_new_commit: interruptible
    on_job_failure: all
  rules:
    - if: $CI_COMMIT_REF_PROTECTED
      auto_cancel:
        on_new_commit: none
        on_job_failure: none

Table

1. Refactor metadata usage in CI Rules entry (!140706 - merged)
2. Implement workflow:rules:auto_cancel for CI (!141090 - merged)

Follow up: Eliminate using `allowed_when` and `allow_keys` (#436473)