set config.active_storage.multiple_file_field_include_hidden as per r…

…ails 7 defaults

config/initializers/new_framework_defaults_7_0.rb

@@ -135,7 +135,7 @@
 # Active Storage `has_many_attached` relationships will default to replacing the current collection instead of appending to it.
 # Thus, to support submitting an empty collection, the `file_field` helper will render an hidden field `include_hidden` by default when `multiple_file_field_include_hidden` is set to `true`.
 # See https://guides.rubyonrails.org/configuring.html#config-active-storage-multiple-file-field-include-hidden for more information.
-# Rails.application.config.active_storage.multiple_file_field_include_hidden = true
+Rails.application.config.active_storage.multiple_file_field_include_hidden = true
 
 # ** Please read carefully, this must be configured in config/application.rb (NOT this file) **
 # Disables the deprecated #to_s override in some Ruby core classes