[Bug]: tx receipt return error when tx is processing

### Is there an existing issue for this?

- [x] I have searched the existing issues

### What happened?

tx receipt should return empty response instead of error for tx not found.

### Cosmos EVM Version

main

### How to reproduce?

use a web3.py, calls w3.eth.send_raw_transaction(), and w3.eth.wait_for_transaction_receipt(), it'll raise exception, instead of polling for tx available.