datebox throws a js error with locale specified

Steps to Reproduce

1. run the zul with chrome device simulator > iPad Mini (or firefox device simulator)
2. click datebox calendar icon to open the popup

Another steps to reproduce

1. run the zul with chrome or firefox
2. click the button to set the constraint

Current Result

chrome

Uncaught TypeError: Cannot read properties of undefined (reading '_moment')
at init.$init (zul.db.wpd:606:73)
at new init (zk.wpd:11127:18)
at init.open (zk.wpd:55476:12)
at init.open (za11y.wpd:863:25)
at init.setOpen (zul.db.wpd:3415:19)
at init._doBtnClick (zul.db.wpd:3565:9)
at HTMLAnchorElement.<anonymous> (zk.wpd:21692:19)
at HTMLAnchorElement.dispatch (zk.wpd:5617:27)
at HTMLAnchorElement.elemData.handle (zk.wpd:5421:28)

Firefox

Uncaught TypeError: date is undefined
$init http://localhost:8080/zk9support/zkau/web/_zv2021083012/js/zul.db.wpd:606
init http://localhost:8080/zk9support/zkau/web/5f1168a0/js/zk.wpd:11127
open http://localhost:8080/zk9support/zkau/web/5f1168a0/js/zk.wpd:55476
open http://localhost:8080/zk9support/zkau/web/5f1168a0/js/za11y.wpd:863
setOpen http://localhost:8080/zk9support/zkau/web/_zv2021083012/js/zul.db.wpd:3415
_doBtnClick http://localhost:8080/zk9support/zkau/web/_zv2021083012/js/zul.db.wpd:3565
_domEvtProxy0 http://localhost:8080/zk9support/zkau/web/5f1168a0/js/zk.wpd:21692
dispatch http://localhost:8080/zk9support/zkau/web/5f1168a0/js/zk.wpd:5617
handle http://localhost:8080/zk9support/zkau/web/5f1168a0/js/zk.wpd:5421

Expected Result

no error

Debug Info

• 9.5.0 doesn't have this bug
• caused by ZK-4745

Workaround

zk-5148.js