Add thumbnail, hero, and mascot back to Form::AdminSettings::KEYS (#10430)

These will allow these images to be uploaded again on the admin settings page.

Add thumbnail, hero, and mascot back to Form::AdminSettings::KEYS (#10430)
59cce076 · slice · Eugen Rochko · abecaba3 · 59cce076
--- a/app/models/form/admin_settings.rb
+++ b/app/models/form/admin_settings.rb
@@ -25,6 +25,9 @@ class Form::AdminSettings
    preview_sensitive_media
    custom_css
    profile_directory
+    thumbnail
+    hero
+    mascot
  ).freeze
  BOOLEAN_KEYS = %i(