Test subset execution with partial config
Fail without fix: https://buildkite.com/dagster/dagster-diffs/builds/7387#0a0f4eb4-103a-45fd-ab6d-7e1a01985404/698-779
This will be a nasty test to debug if it fails again, because the error message only shows up in the step job logs. We only copy the run coordinator logs here. https://github.com/dagster-io/dagster/issues/2793 could help with this in the future.