refactor: use TestAuthorization and skip decoding of eip7702 tx #4296

Job	Run time
check no_std	24s
check	24s
check no_std kzg-rs	36s
check serde	22s
check std	23s
clippy	1m 22s
docs	56s
fmt	7s
test stable --no-default-features	1m 9s
TyposCheck	6s
test stable	1m 25s
test stable --all-features	1m 30s
test beta --no-default-features	1m 23s
test beta	1m 20s
test beta --all-features	1m 35s
test nightly --no-default-features	1m 11s
test nightly	1m 22s
test nightly --all-features	1m 22s
	16m 57s

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