[Bug] Streamline peer banning and block sync

[vicsn]

🐛 Bug Report

• We should ban in dev mode
• We should revisit banning on BlockResponse timeouts, because we ban peers when we restart our node
• We should add some tests to make sure it is handled correctly and we don't regress
• We should fix the following edge-case:
  • A validator sends out block requests to a peer
  • The peer's Router disconnects due to peer refresh
  • Despite this log Block sync is removing all block requests to peer - no block requests are removed
  • 10 minutes later, the block requests time out and we see IP-banning 44.251.223.68 reason: timed out on block requests

Tested on commit hash: 7a3f235e3

[kaimast]

It might be good to postpone this until https://github.com/ProvableHQ/snarkOS/pull/3670 is done. There are some interesting subtleties to consider, such as differentiating between malicious nodes (sending invalid blocks) and other faulty/slow nodes (simply not responding in time).