Merge commit 'c40ab43dc703be988c277d4ba6b7987a3a80e16c' into glitch-soc/merge-upstream

Conflicts:
- `app/helpers/application_helper.rb`:
  Upstream added a helper where glitch-soc had its own, not really
  a conflict.
  Added upstream's helper.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream renamed a constant that was used slightly differently in glitch-soc.
  Renamed it as upstream did.

.eslintrc.js

@@ -64,7 +64,6 @@ module.exports = defineConfig({
     'indent': ['error', 2],
     'jsx-quotes': ['error', 'prefer-single'],
     'semi': ['error', 'always'],
-    'no-case-declarations': 'off',
     'no-catch-shadow': 'error',
     'no-console': [
       'warn',