fix: loaded check condition in upload widget

Author: ghostdevv

packages/svelte-cloudinary/src/components/CldUploadWidget.svelte

@@ -229,7 +229,7 @@
 	} = $$props as $$Props);
 
 	let loaded =
-		typeof window != 'undefined' && !!window.cloudinary?.videoPlayer;
+		typeof window != 'undefined' && !!window.cloudinary?.createUploadWidget;
 
 	let widget: CloudinaryUploadWidget | undefined;