In backfill modal, explain ”Re-execute From Failure”, remove “Re-execute From Last Run”
This should resolve https://github.com/dagster-io/dagster/issues/2989
- Adds a tooltip with an explanation of what "Re-execute from Failure" means and changes Failure => Failures
- Removes the "Re-execute from last run" option entirely. Users never actually asked for this feature, we just included it because we offer it in the single-pipeline re-execution case. In a backfill, it's pretty difficult to reason about because the action varies by partition.
Test Plan: Run tests
Reviewed By: sandyryza
Differential Revision: https://dagster.phacility.com/D6491