In the initial implementation of the `transform2dRoundTripUncertainty` I
tried to approximately figure out how many ops happen in the round trip
transform, but it was just an educated guess. Just bumping it by 1 makes
the test pass with the given seed `2021996283`,
This also adds a helper to run tests with a specific random seed without
modifying the tests, e.g. for this one:
`flutter test --dart-define=RANDOM_SEED=2021996283
packages/flame/test/game/transform2d_test.dart`
And for other tests:
`RANDOM_SEED=2021996283 melos test:seeded`