WIP: Fixes Use warning icon for stages/jobs that are allowed to fail

What does this MR do?

When a job or a stage that is allowed to fail does fail it will show a warning icon.

• Pipelines list, in the mini pipeline graph in the column 'stages'- https://gitlab.com/gitlab-org/gitlab-ce/pipelines
• Pipelines list, in the status button in the column 'status'- https://gitlab.com/gitlab-org/gitlab-ce/pipelines
• [ ] Builds List, in the status button in the column 'status' - https://gitlab.com/gitlab-org/gitlab-ce/builds
• [ ] Build view, in top message status button - https://gitlab.com/gitlab-org/gitlab-ce/builds/4867934
• [ ] Build view, in right sidebar builds list - https://gitlab.com/gitlab-org/gitlab-ce/builds/4867934
• [ ] Pipeline view, in the pipeline Graph - https://gitlab.com/gitlab-org/gitlab-ce/pipelines/4521196
• [ ] Pipeline view, in the status button in the build list below the pipeline Graph - https://gitlab.com/gitlab-org/gitlab-ce/pipelines/4521196
• Pipeline view, in the title of the builds list below the pipeline Graph
• [ ] Merge request view, in the builds tab in the pipeline graph - !6691 (merged) (builds)
• [ ] Merge request view, in the builds tab in the build list below the pipeline Graph - !6691 (merged) (builds)
• [ ] Merge request view, in the builds commit tab - !6691 (merged) (commits)
• Project page in last commit message - https://gitlab.com/gitlab-org/gitlab-ce
• Project forks page if a project has a build status - https://gitlab.com/gitlab-org/gitlab-ce/forks
• Projects page status icon if a project has a build status - https://gitlab.com/dashboard/projects
• Profile view, in the projects tab - https://gitlab.com/u/filipa/projects
• Profile view, in the contributed tab - https://gitlab.com/u/filipa/contributed

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Screenshots (if relevant)

Pipelines list

Pipeline view

Project page in last commit message

Project forks page if a project has a build status

Projects page status icon if a project has a build status

Profile view

Does this MR meet the acceptance criteria?

• CHANGELOG entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #21948 (closed)