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The test was flaky because on slow CI systems the code that exhausts the rate limit could end up taking longer than the 20ms refill interval. If the token is replentished then the subsequent request that should be rate limited ends up succeeding without error. Running the test in a synctest bubble where time is controlled prevents this from being an issue. The token isn't replentished until we explicitly sleep to trigger the refill. Closes #59652
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The test was flaky because on slow CI systems the code that exhausts the rate limit could end up taking longer than the 20ms refill interval. If the token is replentished then the subsequent request that should be rate limited ends up succeeding without error.
Running the test in a synctest bubble where time is controlled prevents this from being an issue. The token isn't replentished until we explicitly sleep to trigger the refill.
Closes #59652