feat(multiome): split validation and add labels into separate SF steps

[Bento007]

Reason for Change

• update ingestion SFn to validate anndata and write labels in separate steps. single-cell#730

Changes

• add
• remove
• modify

Testing steps

• Either list QA steps or reasoning you feel QA is unnecessary
• Describe how you made sure to know that your changes worked. Should allow someone else to go verify your code without in depth knowledge.
• "Unit tested only", "tested in rdev by a, b, c, verifying feature worked by... ", "manually ran pipeline locally with these results: ..."

Checklist 🛎️

• Add product, design, and eng as reviewers for rdev review
• For UI changes, add screenshots/videos, so the reviewers know what you expect them to see
• For UI changes, add e2e tests to prevent regressions
• For UI changes, verify impacted analytics events still work

Notes for Reviewer

[github-actions]

Deployment Summary

• backend_url: https://pr-7418-backend.rdev.single-cell.czi.technology
• backend_de_url: https://pr-7418-backend-de.rdev.single-cell.czi.technology
• backend_wmg_url: https://pr-7418-backend-wmg.rdev.single-cell.czi.technology
• frontend_url: https://pr-7418-frontend.rdev.single-cell.czi.technology
• delete_db_task_definition_arn: arn:aws:ecs:us-west-2:***:task-definition/dp-rdev-pr-7418-deletion:1
• migrate_db_task_definition_arn: arn:aws:ecs:us-west-2:***:task-definition/dp-rdev-pr-7418-migration:1