no mutation signaled if a scope changes async

[catmando]

if a remote delete is received everything works except observers of the scope are not notified.

This because collections never notify while data is loading (not sure why)

It seems though that the only broken case is when a nested scope is updated by an async notification. So a workaround is to add this code

          Hyperstack::Internal::State::Mapper.bulk_update do
            Hyperstack::Internal::State::Variable.set(target, :collection, target.collection)
          end

immediately after

          target.replace loaded_collection

in server_data_cache.rb