Fix records not being indexed sometimes (#12024)

It's possible that after commit callbacks were not firing when
exceptions occurred in the process. Also, the default Sidekiq
strategy does not push indexing jobs immediately, which is not
necessary and could be part of the issue too.

app/models/application_record.rb

@@ -5,6 +5,12 @@ class ApplicationRecord < ActiveRecord::Base
 
   include Remotable
 
+  class << self
+    def update_index(_type_name, *_args, &_block)
+      super if Chewy.enabled?
+    end
+  end
+
   def boolean_with_default(key, default_value)
     value = attributes[key]