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

Conflicts:
- `package.json`:
  Not really a conflict, just a glitch-soc-only dependency textually too close
  to an updated upstream one.
- `yarn.lock`:
  Not really a conflict, just a glitch-soc-only dependency textually too close
  to an updated upstream one.

app/models/media_attachment.rb

@@ -217,7 +217,7 @@ class MediaAttachment < ApplicationRecord
   end
 
   def to_param
-    shortcode
+    shortcode.presence || id&.to_s
   end
 
   def focus=(point)