feat(db): turn off transaction batching for db writes

[iprentic]

Should not be merged without discussion: may cause a performance regression.

Turn off transaction batching around db writes to see if it can let the CI pass.

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[david-leifker]

hijacked branch for test of .never() transaction