fix(runtime/go): websocket client premature close in offline mode (#2834)

Move offline_msg_done signal after the ReadMessage loop exits (when
server closes connection), not on first message receipt. Previously,
multi-segment audio would only get the first segment transcribed
before the client closed the connection.

runtime/golang/websocket/go_ws_client.go

@@ -330,9 +330,9 @@ func message(id string) {
 				text_print += fmt.Sprintf("%s ", text)
 			}
 			fmt.Println("\rpid" + id + ": " + wav_name + ": " + text_print)
-			offline_msg_done = true
 		}
 	}
+	offline_msg_done = true
 }
 
 func wsClient(id, chunk_begin, chunk_size int, done chan bool) {