feat: Create campaign conversation only if user interacts with the bubble (#2335)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/widget/store/modules/conversation/getters.js

@@ -27,6 +27,9 @@ export const getters = {
     }));
   },
   getIsFetchingList: _state => _state.uiFlags.isFetchingList,
+  getMessageCount: _state => {
+    return Object.values(_state.conversations).length;
+  },
   getUnreadMessageCount: _state => {
     const { userLastSeenAt } = _state.meta;
     const count = Object.values(_state.conversations).filter(chat => {