feat: wire network primitives to remaining components

[Rjected]

This completes using NetworkPrimitives generics instead of default types for:

• TransactionsManager,
• NetworkConfig,
• NetworkBuilder,
• EthRequestHandler,
• The NetworkEventListenerProvider impl on NetworkHandle,
• and the RethNetworkConfig impl on RethNetworkConfig

There are many other additions of EthNetworkPrimitives in places that would be required if we were to remove default generics from these types, mostly in tests.