[fix] CLI error handling message

[joske]

Fixes #3286

Now prints the following:

cargo run -- developer execute  --private-key APrivateKey1zkp8CZNn3yeCseEtxuVPbDCwSyhGW6yZKUYKfgXmcpoGPWH --query "http://0.0.0.0:3030" --broadcast "http://0.0.0.0:3030/mainnet/transaction/broadcast" credits.aleo transfer_public
   Compiling snarkos-cli v2.2.7 (/home/jos/Projects/snarkOS/cli)
   Compiling snarkos v2.2.7 (/home/jos/Projects/snarkOS)
    Finished dev [optimized] target(s) in 11.03s
     Running `target/debug/snarkos developer execute --private-key APrivateKey1zkp8CZNn3yeCseEtxuVPbDCwSyhGW6yZKUYKfgXmcpoGPWH --query 'http://0.0.0.0:3030' --broadcast 'http://0.0.0.0:3030/mainnet/transaction/broadcast' credits.aleo transfer_public`

📦 Creating execution transaction for 'credits.aleo/transfer_public'...

⚠️  Failed to fetch program credits.aleo: Response[status: 404, status_text: Not Found, url: http://0.0.0.0:3030/mainnet/program/credits.aleo]