fix: correct `eth_call` serialising + contract test #13072

Job	Run time
cargo-publish-dry-run	7m 8s
Build MacOS	3m 4s
Build Ubuntu	7m 8s
Calibnet stateless mode check	3m 13s
Forest CLI checks	9m 19s
Calibnet check	4m 30s
Calibnet stateless RPC check	14s
Calibnet eth mapping check	8m 47s
Snapshot export checks	12m 33s
Calibnet kademlia checks	2m 23s
Wallet tests	5m 25s
Calibnet no discovery checks	7m 13s
db-migration-checks	4m 14s
State migrations	5m 5s
Bootstrap checks - Forest	2m 13s
Bootstrap checks - Lotus	4m 56s
Calibnet RPC checks	16m 52s
Devnet checks	5m 47s
Devnet Curio checks	0s
Calibnet snapshot parity checks	0s
Integration tests status	1s
	1h 50m 5s

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