fix: RLP for `TxEip4844` #4875

Job	Run time
docs	54s
clippy	1m 15s
doctest	2m 35s
check no_std	46s
feature-checks	7m 34s
fmt	12s
wasm-unknown	2m 1s
test ubuntu-latest stable --no-default-features	2m 15s
wasm-wasi	2m 46s
test ubuntu-latest stable	2m 6s
test ubuntu-latest stable --all-features	2m 47s
test ubuntu-latest nightly --no-default-features	1m 9s
test ubuntu-latest nightly	1m 20s
test ubuntu-latest nightly --all-features	2m 3s
test ubuntu-latest 1.79 --no-default-features	1m 12s
test ubuntu-latest 1.79	1m 14s
test windows-latest stable --no-default-features	5m 44s
test windows-latest stable	5m 55s
test windows-latest stable --all-features	6m 44s
test windows-latest nightly --no-default-features	4m 55s
test windows-latest nightly	3m 40s
test windows-latest nightly --all-features	5m 49s
test windows-latest 1.79 --no-default-features	4m 36s
test windows-latest 1.79	2m 49s
ci success	2s
	1h 12m 23s

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