Account for protocols when querying connected peers

[nazar-pc]

PieceProvider::get_from_cache() start with querying connected peers, but currently Node::connected_peers() simply returns all connected peers regardless of what protocols they support.

This is a minor issue and only results in debug logs being printed, but would have been nice to account for connected peers that support specific request/response protocol to start with.

2024-10-23T17:37:42.328886Z DEBUG subspace_networking::utils::piece_provider: Failed to download cached piece from peer error=Underlying protocol returned an error: Problem on the network: The remote supports none of the requested protocols peer_id=12D3KooWSKAQm66N7jQme72obbPPquBSZuSqMyx5mH5ki1aZ4pGv piece_index=672
2024-10-23T17:37:42.328986Z DEBUG subspace_networking::utils::piece_provider: Failed to download cached piece from peer error=Underlying protocol returned an error: Problem on the network: The remote supports none of the requested protocols peer_id=12D3KooWSKAQm66N7jQme72obbPPquBSZuSqMyx5mH5ki1aZ4pGv piece_index=1634