chore: Fix conversation status in webhooks (#3364)

- fix the wrong conversation status being sent in webhooks
- additional information in websocket events
- refactor activity messaging code
- move activity message generation to background job to stop the callback loop

app/jobs/conversations/activity_message_job.rb

@@ -0,0 +1,7 @@
+class Conversations::ActivityMessageJob < ApplicationJob
+  queue_as :default
+
+  def perform(conversation, message_params)
+    conversation.messages.create(message_params)
+  end
+end