feat: Add the ability to mention team in private message (#11758)

This PR allows agents to mention entire teams in private messages using
`@team_name` syntax. When a team is mentioned, all team members with
inbox access are automatically notified. The scheme changes can be found
[here](https://github.com/chatwoot/prosemirror-schema/pull/34).

---------

Co-authored-by: iamsivin <iamsivin@gmail.com>
Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/javascript/dashboard/helper/editorHelper.js

@@ -301,11 +301,18 @@ export function setURLWithQueryAndSize(selectedImageNode, size, editorView) {
 const createNode = (editorView, nodeType, content) => {
   const { state } = editorView;
   switch (nodeType) {
-    case 'mention':
-      return state.schema.nodes.mention.create({
+    case 'mention': {
+      const mentionType = content.type || 'user';
+      const displayName = content.displayName || content.name;
+
+      const mentionNode = state.schema.nodes.mention.create({
         userId: content.id,
-        userFullName: content.name,
+        userFullName: displayName,
+        mentionType,
       });
+
+      return mentionNode;
+    }
     case 'cannedResponse':
       return new MessageMarkdownTransformer(messageSchema).parse(content);
     case 'variable':