Change the `Launch Backfill` modal to use the new batched `partitionStatuses`…


Change the Launch Backfill modal to use the new batched partitionStatuses graphql field

Summary: Depends on D5725, uses the new batched graphql field to fetch the partition set status

Test Plan: bk, loaded partition view, clicked Launch backfill

Reviewers: catherinewu, sandyryza, dish

Reviewed By: sandyryza

Differential Revision: https://dagster.phacility.com/D5727