Work Package Templates - Edit Endpoint Unmocked Tests

Blocked By #2150

We are making tests in a new way that uses an actual database rather than mocking calls to prisma. You can run these tests by running yarn test:setup, then running yarn test (make sure to run yarn test:teardown whenever you're done). You can see examples of how to do these new tests in src\backend\tests\unmocked\team-type.test.ts; however, these tests are still pretty new, so it's likely you'll have to figure out something we haven't done yet.

This ticket is to make tests of this new type for the edit work package template endpoint (create a new file for this in the unmocked tests folder if need be)

Run yarn test:setup, then review src\backend\tests\unmocked\team-type.test.ts for the actual-database testing pattern. Add or update an unmocked test file for the edit work package template endpoint, run yarn test, and use yarn test:teardown when finished; done means the endpoint is covered without mocked Prisma calls.