fix: Move contact events to account stream rather than individual user stream (#11082)

spec/channels/room_channel_spec.rb

@@ -2,6 +2,8 @@ require 'rails_helper'
 
 RSpec.describe RoomChannel do
   let!(:contact_inbox) { create(:contact_inbox) }
+  let!(:account) { create(:account) }
+  let!(:user) { create(:user, account: account) }
 
   before do
     stub_connection
@@ -12,4 +14,11 @@ RSpec.describe RoomChannel do
     expect(subscription).to be_confirmed
     expect(subscription).to have_stream_for(contact_inbox.pubsub_token)
   end
+
+  it 'subscribes to a stream when pubsub_token is provided for user' do
+    subscribe(user_id: user.id, pubsub_token: user.pubsub_token, account_id: account.id)
+    expect(subscription).to be_confirmed
+    expect(subscription).to have_stream_for(user.pubsub_token)
+    expect(subscription).to have_stream_for("account_#{account.id}")
+  end
 end