Can't set max_unspent_utxos higher than 1024

[CharlieC3]

We're unable to set the max_unspent_utxos config property higher than 1024. Setting this higher would be helpful in scenarios where the bitcoin node a miner is connected to tracks multiple addresses.

stacks-core/testnet/stacks-node/src/config.rs

Line 1809 in e53547c

assert!(val <= 1024, "Value for max_unspent_utxos should be <= 1024");