fix: add BSC chain id to supports_shanghai #493

Job	Run time
docs	29s
fmt	13s
clippy	29s
feature-checks	1m 8s
miri --no-default-features	46s
miri	50s
wasm	32s
miri --all-features	1m 13s
test stable --no-default-features	32s
test stable	17s
test stable --all-features	26s
test beta --no-default-features	20s
test beta	23s
test beta --all-features	30s
test nightly --no-default-features	20s
test nightly	22s
test nightly --all-features	30s
test 1.81 --no-default-features	18s
test 1.81	20s
deny / cargo deny check	14s
	10m 12s

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