Per task queue rate limiter only take effect after 1m.

[yiminc]

Set per task queue rate limit to 1, observe the RPS stay at around 1, then reboot matching and you will see a big spike of throughput for the first minute, then it fall to 1 again. This is due to the rate limiter only update its rate every 1m and is initialized with a big limit value. https://github.com/temporalio/temporal/blob/c2a3a2bdfb6377a633928203ffe577281da216d1/service/matching/matcher.go#L78

We should allow the rate limiter to update its rate for the first time without that 1m delay.

[yiminc]

https://github.com/temporalio/temporal/pull/3335