Re-enable networking on wasm (#4880)

* Use noise and timeouts on wasm

* Don't use wasm-opt when compiling to wasm

* Forgot lockfile

* Add node about disabling wasm-opt

* Enable timeouts in telemetry on wasm

substrate/client/network/src/protocol/light_client_handler.rs

@@ -63,10 +63,11 @@ use std::{
 	iter,
 	io,
 	sync::Arc,
-	time::{Duration, Instant},
+	time::Duration,
 	task::{Context, Poll}
 };
 use void::Void;
+use wasm_timer::Instant;
 
 /// Configuration options for `LightClientHandler` behaviour.
 #[derive(Debug, Clone)]