Heedls 741 fix migrations for competency assessment question role requirements constraints

[DanBloxham-sw]

JIRA link

https://softwiretech.atlassian.net/browse/HEEDLS-741

Description

Created two new migrations, one to undo the previous constraint-introducing migrations (depending on the state the DB is in), and one to add the new unique constraint.
I also commented out the previous migrations to prevent them from causing more errors when migrating past them. The "Undo" migration takes this into account.
I also modified one of the automated test files, as the set up of a fake server was causing errors when it tried to migrate up as it didn't have a config file to take a connection string from. I suspect it could probably be made more efficient in future.

Screenshots

N/A

---

Developer checks

(Leave tasks unticked if they haven't been appropriate for your ticket.)

I have:

• Run the formatter and made sure there are no IDE errors.
• Written tests for the changes (accessibility tests, unit tests for controller, data services, services, view models, etc)
• Manually tested my work with and without JavaScript. Full manual testing guidelines can be found here: https://softwiretech.atlassian.net/wiki/spaces/HEE/pages/6703648740/Testing
• Updated/added documentation in Swiki and/or Readme. Links (if any) are below:
  • doc_1_here
• Updated my Jira ticket with information about other parts of the system that were touched as part of the MR and have to be sanity tested to ensure nothing’s broken.
• Scanned over my own MR to ensure everything is as expected.