Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `app/views/admin/announcements/edit.html.haml`:
  Upstream change too close to theming-related glitch-soc change.
  Ported upstream changes.
- `app/views/admin/announcements/new.html.haml`
  Upstream change too close to theming-related glitch-soc change.
  Ported upstream changes.

app/models/concerns/domain_normalizable.rb

@@ -11,5 +11,7 @@ module DomainNormalizable
 
   def normalize_domain
     self.domain = TagManager.instance.normalize_domain(domain&.strip)
+  rescue Addressable::URI::InvalidURIError
+    errors.add(:domain, :invalid)
   end
 end