[LIBP2P] - Unit Tests for `NetworkBehavior`s

[bfish713]

What is this task and why do we need to work on it?

We implement network behavior on top of the default libp2p behaviors. The libp2p library has many unit tests to ensure their behaviors work as expected. We want to do the same in our code

What work will need to be done to complete this task?

No response

Are there any other details to include?

No response

What are the acceptance criteria to close this issue?

Each instance of impl NetworkBehaviour has unit tests comparable to the libp2p library tests.

Branch work will be merged to (if not the default branch)

No response