feat(net): disconnect from inactive nodes if necessary

[317787106]

What does this PR do?

To maintain the stability of the network and prevent node isolation, the node needs to be disconnected from inactive nodes on a regular basis. Three strategies are adopted:

1. If the node is in a LAN and the number of peers is greater than or equal to minConnection, disconnect from the earliest inactive peer that has been inactive for more than the threshold time.
2. If the node is isolated, disconnect from one active peer if the active number is greater than or equal to minActiveConnection. At the same time, disconnect from some passive peers but ensure that the retention percentage of peers is greater than or equal to 80%.
3. Optimize the random disconnect policy and only disconnect from the peer that has remained inactive for too long.

Why are these changes required?

This PR has been tested by:

• Unit Tests
• Manual Testing

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