quic: Ensure that peers can be accepted before spawning the worker task

[lexnv]

litep2p/src/transport/s2n-quic/mod.rs

Lines 167 to 178 in e0b7118

	// TODO: verify that the peer can actually be accepted
	let mut protocol_set = self.context.protocol_set();
	protocol_set.report_connection_established(connection_id, peer, address).await?;
	tokio::spawn(async move {
	let quic_connection =
	QuicConnection::new(peer, protocol_set, connection, connection_id);
	if let Err(error) = quic_connection.start().await {
	tracing::debug!(target: LOG_TARGET, ?error, "quic connection exited with an error");
	}
	});