chore: Fix flaky tests

[cmaddox5]

Summary of changes

Asana Ticket: [🍎💳] Fix intermittent API test failures

I believe the root cause of the flaky tests is the fact that we reuse trip_ids across test modules. This causes some logic to include the wrong model in the returned map. In each test module, I changed the trip_ids to be unique to the module.

Even after the above change, tests were still intermittently failing. Decided to explore ways to ensure fresh state before each test. Found that stopping and starting the State app before each test allows for more predictable state in each process.

[Whoops]

I checked this out and did a little loop to run tests until they failed, but I actually got a failure on the TripController on my first run.
test.txt

[Whoops]

Here's another that includes some failures on our authentication plug
test.txt
(To be clear if the intent is to do multiple PRs to clean this up then I'm all for going ahead and merging this one)

[cmaddox5]

Dang, thanks for letting me know. Believe it or not, I didn't see failures there in my testing.

[cmaddox5]

Revisited this with @jzimbel-mbta and we think we found a better solution. After making the change, the plug test failures seemed to go away but I am not confident that my changes would be the reason. Because I am reaching the end of the timebox of 3 days, it might be best to go with these changes and revisit if the plug failures show up again.