Improve consumer `Stream` implementations #3606

Job	Run time
check (format)	15s
test (ubuntu-latest, nats-main)	12m 6s
test (ubuntu-latest, nats-dev)	13m 6s
test (macos-latest, nats-main)	12m 5s
test (macos-latest, nats-dev)	11m 55s
test (windows-latest, nats-main)	19m 7s
test (windows-latest, nats-dev)	20m 14s
check (examples)	1m 31s
check (docs)	1m 31s
check (licenses)	1m 39s
check (lint)	1m 50s
check (msrv)	1m 41s
check (spelling)	6m 45s
	1h 43m 45s

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