Create a test which could detect #4064

[coot]

trafficstars

TODO list:

• [ ] write a test which could detect #4064
• [x] fix ping-pong issue (ping-pong triggers a timeout)
• [ ] enable byte limits in Test.Ouroboros.Network.Testnet.Simulation.Node
• [ ] change the module structure of the diffusion simulation
• [ ] change how tracers are used in the diffusion simulation