FR: Supported method: wallet_prepareCalls on MegaETH

[liho00]

Status: 400
URL: https://megaeth-mainnet.g.alchemy.com/v2/xxx
Request body: {"method":"wallet_prepareCalls","params":[{"from":"","calls":[{"to":"","data":""}],"capabilities":{"nonceOverride":{"nonceKey":"0x19caecb55161902eb3e"},"eip7702Auth":true,"paymasterService":{"policyId":""}},"chainId":"0x10e6"}]}

Details: {"code":-32600,"message":"Unsupported method: wallet_prepareCalls on megaeth"}