feat: Add chatwoot:error sdk event (#3998)

app/views/widget_tests/index.html.erb

@@ -36,14 +36,18 @@ window.chatwootSettings = {
 })(document,"script");
 
 window.addEventListener('chatwoot:ready', function() {
-  console.log(window.$chatwoot);
+  console.log('chatwoot:ready', window.$chatwoot);
   if (window.location.search.includes('setUser')) {
     window.$chatwoot.setUser('<%= user_id %>', {
-      identifier_hash: '<%= user_hash %>',
+      identifier_hash: 'a<%= user_hash %>',
       email: 'jane@example.com',
       name: 'Jane Doe',
       phone_number: ''
     });
   }
 })
+
+window.addEventListener('chatwoot:error', function(e) {
+  console.log('chatwoot:error', e.details)
+})
 </script>