fix: timezone aware SLA banner (#38745)

diff --git a/erpnext/public/js/utils.js b/erpnext/public/js/utils.js
index e9d06df..b0ea568 100755
--- a/erpnext/public/js/utils.js
+++ b/erpnext/public/js/utils.js
@@ -1077,7 +1077,7 @@
 }
 
 function get_time_left(timestamp, agreement_status) {
-	const diff = moment(timestamp).diff(moment());
+	const diff = moment(timestamp).diff(frappe.datetime.system_datetime(true));
 	const diff_display = diff >= 44500 ? moment.duration(diff).humanize() : 'Failed';
 	let indicator = (diff_display == 'Failed' && agreement_status != 'Fulfilled') ? 'red' : 'green';
 	return {'diff_display': diff_display, 'indicator': indicator};