fix: (ux) Add is_group=0 filter on website warehouse (#30396) (#30397)

- It does not support group warehouses right now and it is misleading

(cherry picked from commit d24458ab77)

Co-authored-by: Marica <maricadsouza221197@gmail.com>

erpnext/e_commerce/doctype/website_item/website_item.js

@@ -5,6 +5,12 @@ frappe.ui.form.on('Website Item', {
 	onload: function(frm) {
 		// should never check Private
 		frm.fields_dict["website_image"].df.is_private = 0;
+
+		frm.set_query("website_warehouse", () => {
+			return {
+				filters: {"is_group": 0}
+			};
+		});
 	},
 
 	image: function() {