Fix list not being automatically unpinned when it returns 404 in web UI (#11045)

app/javascript/styles/mastodon/components.scss

@@ -3075,6 +3075,10 @@ a.status-card.compact:hover {
   display: flex;
 }
 
+.column-header__links {
+  margin-bottom: 14px;
+}
+
 .column-header__links .text-btn {
   margin-right: 10px;
 }