Add missing where clause to event storage
When using PostgresEventLogStorage, we would see incorrect stats for runs. This diff adds a simple where clause to the query in SqlEventLogStorage.get_stats_for_run.
We didn't see this issue with SqliteEventLogStorage because we shard the sqlite files by run_id, so this where clause is not necessary in the sqlite case.
Test Plan: unit
Reviewers: max, schrockn
Reviewed By: max
Differential Revision: https://dagster.phacility.com/D1712