fix(ui): render polished SSR-safe component variants

scripts/generate-ui-component-reference.mjs

@@ -107,4 +107,4 @@ for (const category of [...new Set(components.map((component) => component.categ
     );
   }
 }
-writeFileSync(join(uiRoot, "COMPONENTS.md"), `${lines.join("\n")}\n`);
+writeFileSync(join(uiRoot, "COMPONENTS.md"), `${lines.join("\n").trimEnd()}\n`);