fix(ios-debugging): Close frontend socket unconditionally

There's no need to keep the frontend socket open after its corresponding
backend socket disconnects. This misleads the Inspector UI that it
is still connected with a backend.

A part of the fix to NativeScript/ios-jsc#927

Author: mbektchiev

lib/device-sockets/ios/socket-proxy-factory.ts

@@ -132,9 +132,7 @@ export class SocketProxyFactory extends EventEmitter implements ISocketProxyFact
 
 			deviceSocket.on("close", () => {
 				this.$logger.info("Backend socket closed!");
-				if (!this.$options.watch) {
-					webSocket.close();
-				}
+				webSocket.close();
 			});
 
 			webSocket.on("close", () => {