feat: Use Hasura column presets to populate creator_id

[RODO94]

This follows work on the demo workspace ticket: https://trello.com/c/EfaEQRzK/2441-create-a-demo-workspace

We found that the creator_id was not populating when we create a flow in the editor. To fix this, we decided to use Hasura Column Presets to reduce the number of places the change had to be made, and to make it more maintainable in the future.

We do sacrifice readability in the code base, but we found it was a better win for maintainability for a data field most people would expect to be populated by the user creating it.

Column Preset Docs

[github-actions]

🤖 Hasura Change Summary compared a subset of table metadata including permissions:

Updated Tables (2)

• public.flows permissions:

  	insert	select	update	delete
  api	➕/➖
  demoUser	➕/➖
  platformAdmin	➕/➖
  teamEditor	➕/➖

• public.submission_services_summary permissions:

  	insert	select	update	delete
  demoUser		➕/➖

[RODO94]

Create a 'demo' workspace

[DafyddLlyr]

@RODO94 Could you please also run E2E regression tests against this branch just to check that this method holds up with the mocking we've done there?

[github-actions]

Removed vultr server and associated DNS entries

[RODO94]

@DafyddLlyr Regression tests have passed

[DafyddLlyr]

Bit of a nitpick sorry, but there's no linting set up for this file afaik - it looks like it's your local IDE config that's changes from " to ' here.

Could you please change this back so that the only diff you've made for the column presets shows here?

[DafyddLlyr]

Nice! Thanks