Exclude backfill start date for versioning in join jobs #960
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Summary
This PR will add a flag to exclude backfill start date in the join part in versioning check.
Why / Goal
Exclude the backfill start date in the join part, it is intended to trigger separate group by backfill jobs, and semantic hash is only used in join for versioning check, therefore, exclude it for more flexibility of group by backfill jobs
Test Plan
Checklist
Reviewers
@airbnb/airbnb-chronon-maintainers