[easy] Fix missing param change in date_partition_range call
Summary: I Missed a spot, and toys repo doesn't seem to be covered by automated tests. Noticed when trying to load dagit on the toys repo.
Test Plan: Load dagit with top-level workspace.yaml, no more error. Check all other date_partition_range callsites
Reviewers: prha, alangenfeld, sashank, johann
Reviewed By: prha
Differential Revision: https://dagster.phacility.com/D4801