Over the network through collation and validation protocol, as part of WireMessage we could get a PeerMessage or a ViewUpdate.

ViewUpdate tells us about latest blocks (heads) and finalized number with our peers.

We are supposed to be update our peer data with these views.

This commit, reads ViewUpdate from both collation and validation protocol and handles them inside network bridge by updating our peer data. Later, it sends that view to other subsystems so that each subsystem can update their view too.

Fixes #3864