5986 Add migration to drop user_account fk constraint

[noel-yeldos]

Fixes #5986

👩🏻‍💻 What does this PR do?

Add migratoin to drop user_account fk constraint from vaccination table. Vaccinations given by new users on remote sites now show up in the vaccination table.

💌 Any notes for the reviewer?

🧪 Testing

• On OG, create a new user
• On OMS remote site, log in as this new user
• Within a vaccination program encounter, give a new vaccination
• Sync to OMS central
• Open vaccination table in dbeaver and see given vaccination in the vaccination table

📃 Documentation

• Part of an epic: documentation will be completed for the feature as a whole
• No documentation required: no user facing changes or a bug fix which isn't a change in behaviour
• These areas should be updated or checked:
  1.
  2.

[lache-melvin]

sweeet thanks noel!! nice work getting everything set up to test this!