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

Conflicts:
- `.github/workflows/build-image.yml`:
  Fix erroneous deletion in a previous merge.
- `Gemfile`:
  Conflict caused by glitch-soc-only hCaptcha dependency
- `app/controllers/auth/sessions_controller.rb`:
  Minor conflict due to glitch-soc's theming system.
- `app/controllers/filters_controller.rb`:
  Minor conflict due to glitch-soc's theming system.
- `app/serializers/rest/status_serializer.rb`:
  Minor conflict due to glitch-soc having an extra `local_only` property

app/javascript/packs/public.js

@@ -3,6 +3,7 @@ import loadPolyfills from '../mastodon/load_polyfills';
 import ready from '../mastodon/ready';
 import { start } from '../mastodon/common';
 import loadKeyboardExtensions from '../mastodon/load_keyboard_extensions';
+import 'cocoon-js-vanilla';
 
 start();