feat(rpc-type) add more test for StateOverride #759

Job	Run time
docs	47s
clippy	37s
feature-checks	1m 26s
test stable --no-default-features	55s
fmt	10s
test stable	1m 4s
test stable --all-features	1m 51s
test nightly --no-default-features	54s
wasm	27s
test nightly	1m 3s
test nightly --all-features	1m 52s
test 1.75 --no-default-features	35s
test 1.75	41s
	12m 22s

Provide feedback