set wav sample rate and PCM for h5 (#919)

zhaomingwork

2023-09-04 5d15727b1e545a17793a5776bbe5c35b87654398

 funasr/runtime/html5/static/wsconnecter.js

@@ -77,6 +77,11 @@
      if(isfilemode)

      {

         request.wav_format=file_ext;

         if(file_ext=="wav")

         {

            request.wav_format="PCM";

            request.audio_fs=file_sample_rate;

         }

      }

      var hotwords=getHotwords();

      if(hotwords.length>0)