Reverted https://github.com/wekan/wekan/pull/5774 about due date changes.

Thanks to xet7 !

Fixes #5782

client/components/cards/cardDate.js

@@ -1,4 +1,3 @@
-import { Utils } from '/client/lib/utils';
 import moment from 'moment/min/moment-with-locales';
 import { TAPi18n } from '/imports/i18n';
 import { DatePicker } from '/client/lib/datepicker';

client/lib/datepicker.js

@@ -83,8 +83,7 @@ export class DatePicker extends BlazeComponent {
       {
         'keyup .js-date-field'() {
           // parse for localized date format in strict mode
-         const normalizedValue = Utils.normalizeDigits(this.find('#date').value);
-          const dateMoment = moment(normalizedValue, 'L', true);
+          const dateMoment = moment(this.find('#date').value, 'L', true);
           if (dateMoment.isValid()) {
             this.error.set('');
             this.$('.js-datepicker').datepicker('update', dateMoment.toDate());
@@ -92,9 +91,8 @@ export class DatePicker extends BlazeComponent {
         },
         'keyup .js-time-field'() {
           // parse for localized time format in strict mode
-          const normalizedValue = Utils.normalizeDigits(this.find('#time').value);
           const dateMoment = moment(
-           normalizedValue,
+            this.find('#time').value,
             adjustedTimeFormat(),
             true,
           );
@@ -106,14 +104,12 @@ export class DatePicker extends BlazeComponent {
           evt.preventDefault();
 
           // if no time was given, init with 12:00
-          const timeValue = Utils.normalizeDigits(evt.target.time.value);
           const time =
-           timeValue ||
+            evt.target.time.value ||
             moment(new Date().setHours(12, 0, 0)).format('LT');
           const newTime = moment(time, adjustedTimeFormat(), true);
-          const dateValue = Utils.normalizeDigits(evt.target.date.value);
-          const newDate = moment(dateValue, 'L', true);
-          const dateString = `${dateValue} ${time}`;
+          const newDate = moment(evt.target.date.value, 'L', true);
+          const dateString = `${evt.target.date.value} ${time}`;
           const newCompleteDate = moment(
             dateString,
             `L ${adjustedTimeFormat()}`,

client/lib/utils.js

@@ -11,17 +11,6 @@ Utils = {
       currentBoard.setColor(currentBoard["background-color"]);
     }
   },
-  // Normalize non-Western (Persian/Arabic) digits to Western Arabic (0-9)
-  // This helps with date parsing in non-English languages
-  normalizeDigits(str) {
-    if (!str) return str;
-    const persian = [/۰/g, /۱/g, /۲/g, /۳/g, /۴/g, /۵/g, /۶/g, /۷/g, /۸/g, /۹/g];
-    const arabic  = [/٠/g, /١/g, /٢/g, /٣/g, /٤/g, /٥/g, /٦/g, /٧/g, /٨/g, /٩/g];
-    for (let i = 0; i < 10; i++) {
-      str = str.replace(persian[i], i).replace(arabic[i], i);
-    }
-    return str;
-  },
   /** returns the current board id
    * <li> returns the current board id or the board id of the popup card if set
    */