Fix nil errors in form builder when is system

Author: laurajaime

app/forms/concerns/decidim/reporting_proposals/form_builder_override.rb

@@ -12,6 +12,7 @@ module FormBuilderOverride
       included do
         def file_field(object_name, options = {})
           return super(object_name, options) unless Decidim::ReportingProposals.use_camera_button
+          return super(object_name, options) if @object_name == "editor_image" || @object_name == "oauth_application"
 
           unless @template.snippets.any?(:reporting_proposals_camera_scripts) || @template.snippets.any?(:reporting_proposals_camera_styles)
             @template.snippets.add(:reporting_proposals_camera_scripts, @template.prepend_javascript_pack_tag("decidim_reporting_proposals_camera"))