fix: frappe.get_palette when text is undefined (frappe#21033) (frappe…

…#21034)

[skip ci]

(cherry picked from commit 44e592f)

Co-authored-by: Rushabh Mehta <rmehta@gmail.com>

frappe/public/js/frappe/utils/common.js

@@ -129,6 +129,7 @@ frappe.palette = [
 ];
 
 frappe.get_palette = function (txt) {
+	if (!txt) return frappe.palette[8]; // breaks when undefined
 	var idx = cint((parseInt(md5(txt).substr(4, 2), 16) + 1) / 5.33);
 	return frappe.palette[idx % 8];
 }