chore: Migrate PubSub Token to contact inbox (#3434)

At present, the websocket pubsub tokens are present at the contact objects in chatwoot. A better approach would be to have these tokens at the contact_inbox object instead. This helps chatwoot to deliver the websocket events targetted to the specific widget connection, stop contact events from leaking into other chat sessions from the same contact.

Fixes #1682
Fixes #1664

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>

app/views/api/v1/conversations/partials/_conversation.json.jbuilder

@@ -13,6 +13,7 @@ json.meta do
       json.partial! 'api/v1/models/team.json.jbuilder', resource: conversation.team
     end
   end
+  json.hmac_verified conversation.contact_inbox&.hmac_verified
 end
 
 json.id conversation.display_id

app/views/api/v1/widget/configs/create.json.jbuilder

@@ -22,7 +22,7 @@ json.chatwoot_widget_defaults do
   json.use_inbox_avatar_for_bot ActiveModel::Type::Boolean.new.cast(ENV.fetch('USE_INBOX_AVATAR_FOR_BOT', false))
 end
 json.contact do
-  json.pubsub_token @contact.pubsub_token
+  json.pubsub_token @contact_inbox.pubsub_token
 end
 json.auth_token @token
 json.global_config @global_config