[Tracking issue] In-mem trie loadtest on forknet

[walnut-the-cat]

• Investigation note: link

TODOs

• Make sure Forknet works with MainNet state, without In-Mem trie & Single shard tracking (no traffic)
  • Address all the issues along the way
• Enable In-mem trie and single shard tracking (no traffic)
  • Address all the issues along the way
• Add synthetic traffic
  • Address all the issues along the way
• Add mainnet traffic mirroring
  • Address all the issues along the way

As we discover an issue, please create a sub issue / PR and add it here so we can track.

[tayfunelmas]

Since we have been testing memtrie with stateless validation on forknet for a couple weeks, closing this one.