Fixes 8987 broken alignment at "Remote interaction dialog" (#8988)

app/javascript/styles/mastodon/forms.scss

@@ -562,12 +562,12 @@ code {
 .oauth-prompt,
 .follow-prompt {
   margin-bottom: 30px;
-  text-align: center;
   color: $darker-text-color;
 
   h2 {
     font-size: 16px;
     margin-bottom: 30px;
+    text-align: center;
   }
 
   strong {