evm_signer::TryProcessOutTx does allow to send out CCTX tx to address(0), which would effectivelly cause a funds loss. This is low as self-reck. I would recommend to add the following conditions.
https://github.com/code-423n4/2023-11-zetachain/blob/main/repos/node/zetaclient/evm_signer.go#L332-L349
