fix(settings): preserve both panes in compact windows (#2115)

src/features/templates/settings/Settings.module.css

@@ -14,6 +14,7 @@
 }
 .split {
   flex: 1;
+  min-width: 520px;
   min-height: 320px;
   display: flex;
   border: 1px solid var(--border-strong);