Feat: Multiple P2P fixes

[rem1niscence]

Description

Apply multiple minor fixes to p2p to improve stability and a fix for a possible mempool panic on dex check

Related Issues

Closes: N/A

Changes Made

• Release peer error lock faster
• increase hearbeat timeout
• cache peerInfo in MultiConn
• prioritize heartbeat send
• prevent reconnect stampede on failed peers
• fix race condition on check mempool

Checklist

• I have tested the changes locally and verified they work as intended.
• I have appropriately titled my branch issue-#<issue-number>.
• I have run re-built the web-wallet and/or block explorer (if applicable).
• I have run npm run prettier to format the web-wallet and/or block explorer (if applicable)
• I have updated documentation (if applicable).
• I have included tests for the changes (if applicable).

Additional Notes