chore: switch gas check order in blake2 precompile #4107

Job	Run time
check no_std	25s
check no_std optimism	23s
test stable --no-default-features	47s
test stable	50s
check	20s
test stable --all-features	1m 34s
check serde	30s
clippy	1m 17s
test beta --no-default-features	2m 24s
check std	17s
test beta	2m 23s
docs	1m 15s
test beta --all-features	2m 41s
fmt	6s
test nightly --no-default-features	2m 5s
TyposCheck	5s
test nightly	2m 11s
test nightly --all-features	2m 16s
	21m 49s

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