Fix CSS import path to use published export from components package

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

packages/fields/src/index.css

@@ -7,4 +7,4 @@
  */
 
 /* Import styles from @object-ui/components to ensure all Shadcn UI styles are available */
-@import '@object-ui/components/src/index.css';
+@import '@object-ui/components/style.css';