Reduce delay for the first reconnection attempt of audio's websocket

This is the same behavior we used to have on older sip.js version code
By doing this we reduce errors when user try to perform join/hangup during an websocket reconnection

bigbluebutton-html5/imports/api/audio/client/bridge/sip.js

@@ -541,19 +541,19 @@ class SIPSession {
         },
       }, `User agent reconnection attempt ${attempts}`);
 
-      setTimeout(() => {
-        this.userAgent.reconnect().then(() => {
-          this._reconnecting = false;
-          resolve();
-        }).catch(() => {
+      this.userAgent.reconnect().then(() => {
+        this._reconnecting = false;
+        resolve();
+      }).catch(() => {
+        setTimeout(() => {
           this._reconnecting = false;
           this.reconnect(++attempts).then(() => {
             resolve();
           }).catch((error) => {
             reject(error);
           });
-        });
-      }, USER_AGENT_RECONNECTION_DELAY_MS);
+        }, USER_AGENT_RECONNECTION_DELAY_MS);
+      });
     });
   }