Add retried jobs to pipeline stages
What does this MR do?
Add new property
Projects::PipelinesController#stage.json response which will list all the retried jobs for that specified stage.
What are the relevant issue numbers?
Does this MR meet the acceptance criteria?
- Changelog entry added, if necessary
- Documentation created/updated
- Tests added for this feature/bug
- Conforms to the code review guidelines
- Conforms to the merge request performance guidelines
- Conforms to the style guides
- Conforms to the database guides
Closes #50461 (closed)