WIP: Add optimistic locking retry for commit_status

Fixes StaleObjectError for CommitStatus

Detailed bug information: #197930 (comment 343026853)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Related to #197930 (closed)