prevent PayableOverrides to have a customData field with undefined value

[nataouze]

deploy does not work when customData contains an undefined value.

invalid object key - customData (argument="transaction:customData", value={"gasLimit":1044240,"nonce":0,"data":"0x...","from":"0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266"}, code=INVALID_ARGUMENT, version=properties/5.7.0) {"reason":"invalid object key - customData","code":"INVALID_ARGUMENT","argument":"transaction:customData","value":{"gasLimit":1044240,"nonce":0,"data":"0x...","from":"0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266"}}
Error: invalid object key - customData (argument="transaction:customData", value={"gasLimit":1044240,"nonce":0,"data":"0x...","from":"0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266"}, 

[wighawag]

Thanks!
published in v1.0.1