add elliptical border radius fallback

Author: softmarshmallow

packages/builder-css-styles/border-radius/index.ts

@@ -54,14 +54,16 @@ export function borderRadius(r: BorderRadiusManifest): CSSProperties {
   if (!r) {
     return;
   }
-
   if (r.all) {
     if (isCircularRadius(r.all)) {
       return {
         "border-radius": px(r.all),
       };
     } else {
       console.warn("elliptical border radius not supported");
+      return {
+        "border-radius": px(r.all.x),
+      };
     }
   } else {
     return {