keep empty speech result (#1772)

彭震东

2024-05-30 a64b7d8d8aeb2bb543ca703045a45f42470e9a63

 runtime/html5/static/wsconnecter.js

@@ -71,6 +71,7 @@
         "wav_name":  "h5",

         "is_speaking":  true,

         "chunk_interval":10,

         "itn":getUseITN(),

         "mode":getAsrMode(),

         

      };