0044327: Ramdom PayOpenTickets are failing in try

# HG changeset patch
# User Prakash M <prakash@qualiantech.com>
# Date 1591771000 -19800
#      Wed Jun 10 12:06:40 2020 +0530
# Node ID d73b40ea63f776d565b842813d07c2955145ef4b
# Parent  6d9ebd516e94da073e6c1143b8f212d875fd1432
Related to BUG-44327: On reloading POS with loaded payopentickets throws js error in
get businessPartner of prepayment amount calculation.

* Prepayment calculation is done asynchronously by 'loadedMultiOrder' trigger
* This error occurs if the businessPartner value is not on calculating prepayment
* businessPartner is set in successCallbackBPs function

* There are 2 properties in OB.MobileApp.model,
* businessPartner - BusinessPartner Object with all attributes
* businesspartner - With BusinessPartner id
* businesspartner has value based on which businessPartner is set in
successCallbackBPs function
* so validation is done using businesspartner instead of businessPartner

diff -r 6d9ebd516e94 -r d73b40ea63f7 web/org.openbravo.retail.posterminal/js/model/order.js
--- a/web/org.openbravo.retail.posterminal/js/model/order.js	Tue Jun 09 12:59:44 2020 +0530
+++ b/web/org.openbravo.retail.posterminal/js/model/order.js	Wed Jun 10 12:06:40 2020 +0530
@@ -1260,8 +1260,7 @@
           !this.isNegative() &&
           !this.get('cancelLayaway') &&
           this.get('bp') &&
-          this.get('bp').get('id') !==
-            OB.MobileApp.model.get('businessPartner').get('id')
+          this.get('bp').get('id') !== OB.MobileApp.model.get('businesspartner')
         ) {
           OB.UTIL.prepaymentRules[
             OB.MobileApp.model.get('terminal').prepaymentAlgorithm