PartitionBackfills for SDAs execute all assets under the multi_asset

[OwenKephart]

Dagster version

1.0.1

What's the issue?

Currently, the backfills that are created for partitioned asset jobs do not have asset selection data passed in to them. The subselection is handled purely through step_keys_to_execute, which is not fine-grained enough in cases where a single step may produce multiple assets (e.g. dbt multi assets).

What did you expect to happen?

No response

How to reproduce?

No response

Deployment type

No response

Deployment details

No response

Additional information

No response

Message from the maintainers

Impacted by this issue? Give it a 👍! We factor engagement into prioritization.

[OwenKephart]

Stems from: https://sourcegraph.com/github.com/dagster-io/dagster/-/blob/js_modules/dagit/packages/core/src/assets/LaunchAssetChoosePartitionsDialog.tsx?L229 using op names (which get translated to step names).