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

Conflicts:
- `README.md`:
  Our README is completely different. Discarded upstream changes.
- `app/javascript/packs/mailer.js`:
  We had removed the file. Move the changes to `app/javascript/core/mailer.js`.

app/javascript/styles/mastodon/components.scss

@@ -2538,7 +2538,6 @@ a.account__display-name {
   padding: 40px;
 
   .logo {
-    fill: $primary-text-color;
     width: 50px;
     margin: 0 auto;
     margin-bottom: 40px;