fix: datepicker locale change

Author: segunadebayo

.changeset/fix-date-picker-locale-format.md

@@ -0,0 +1,5 @@
+---
+"@zag-js/date-picker": patch
+---
+
+Fix issue where date picker input does not update format when locale changes.

packages/machines/date-picker/src/date-picker.machine.ts

@@ -206,7 +206,7 @@ export const machine = createMachine<DatePickerSchema>({
 
   watch({ track, prop, context, action, computed }) {
     track([() => prop("locale")], () => {
-      action(["setStartValue"])
+      action(["setStartValue", "syncInputElement"])
     })
 
     track([() => context.hash("focusedValue")], () => {