refactor: restore pages extension pagination model

Author: DavidMorgan

apps/playground/src/styles.css

@@ -1234,9 +1234,7 @@ pre {
   min-height: 46rem;
   padding: 1.25rem;
   border-top: 1px solid var(--panel-border);
-  background:
-    radial-gradient(circle at top, rgba(191, 219, 254, 0.26), transparent 34%),
-    linear-gradient(180deg, rgba(148, 163, 184, 0.16), rgba(15, 23, 42, 0.08));
+  background: #e5e7eb;
 }
 
 .pages-editor-surface.mxm-pages {