fix: Update the voice note format to MP3 to fix the delivery issues (#9448)

Use MP3 as the default format to send voice notes recorded from
Chatwoot. This change was made to fix the issue of Telegram voice notes
not working with the error `WEBPAGE_CURL_FAILED` .

Telegram treats the mp3 recordings as audio attachments. Once we can
identify a fix for the original issue, we will revisit the `ogg`
implementation.

---------

Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/javascript/shared/constants/messages.js

@@ -98,6 +98,7 @@ export const CSAT_RATINGS = [
 export const AUDIO_FORMATS = {
   WEBM: 'audio/webm',
   OGG: 'audio/ogg',
+  MP3: 'audio/mp3',
   WAV: 'audio/wav',
 };