Add modal embed height utilities

css/tailwind.source.css

@@ -1002,6 +1002,11 @@
     border-radius: var(--radius-full);
   }
 
+  /* Modal embed containers ensure iframe wrappers respect modal sizing tokens. */
+  .modal-embed-frame {
+    @apply flex h-modal-embed w-full max-h-modal-embed flex-col;
+  }
+
   .modal-footer {
     @apply flex flex-col gap-3 px-8 pb-8 pt-4;
   }