CM4 Direction for throttle_time_ms Mismatch

[Spiderpig86]

The directions mention that any throttle_time_ms is accepted

kafka-tester/internal/test_helpers/course_definition.yml

Line 525 in 234e099

- The `throttle_time_ms` field in the response is present (any value is accepted).

)

But the test case strictly asserts it is 0

kafka-tester/internal/stagef4.go

Line 90 in 234e099

ThrottleTimeMs: 0,

This is reproducible by modifying the response throttle_time_ms to a non-zero value.

[ryan-gang]

Thanks, @Spiderpig86, for highlighting the issue! We've fixed it in codecrafters-io/build-your-own-kafka#16.