fix: prevent asset conflicts between React and Grid.js versions

Add coexistence checks to all enqueue methods to prevent loading
both React and Grid.js assets simultaneously.

Changes:
- ReactAdmin.php: Only enqueue React assets when ?react=1
- Init.php: Skip Grid.js when React active on admin pages
- Form.php, Coupon.php, Access.php: Restore classic assets when ?react=0
- Customer.php, Product.php, License.php: Add coexistence checks

Now the toggle between Classic and React versions works correctly.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

node_modules/moment/dist/locale/ar-ps.js

@@ -0,0 +1,112 @@
+//! moment.js locale configuration
+//! locale : Arabic (Palestine) [ar-ps]
+//! author : Majd Al-Shihabi : https://github.com/majdal
+
+import moment from '../moment';
+
+var symbolMap = {
+        1: '١',
+        2: '٢',
+        3: '٣',
+        4: '٤',
+        5: '٥',
+        6: '٦',
+        7: '٧',
+        8: '٨',
+        9: '٩',
+        0: '٠',
+    },
+    numberMap = {
+        '١': '1',
+        '٢': '2',
+        '٣': '3',
+        '٤': '4',
+        '٥': '5',
+        '٦': '6',
+        '٧': '7',
+        '٨': '8',
+        '٩': '9',
+        '٠': '0',
+    };
+
+export default moment.defineLocale('ar-ps', {
+    months: 'كانون الثاني_شباط_آذار_نيسان_أيّار_حزيران_تمّوز_آب_أيلول_تشري الأوّل_تشرين الثاني_كانون الأوّل'.split(
+        '_'
+    ),
+    monthsShort:
+        'ك٢_شباط_آذار_نيسان_أيّار_حزيران_تمّوز_آب_أيلول_ت١_ت٢_ك١'.split('_'),
+    weekdays: 'الأحد_الإثنين_الثلاثاء_الأربعاء_الخميس_الجمعة_السبت'.split('_'),
+    weekdaysShort: 'أحد_إثنين_ثلاثاء_أربعاء_خميس_جمعة_سبت'.split('_'),
+    weekdaysMin: 'ح_ن_ث_ر_خ_ج_س'.split('_'),
+    weekdaysParseExact: true,
+    longDateFormat: {
+        LT: 'HH:mm',
+        LTS: 'HH:mm:ss',
+        L: 'DD/MM/YYYY',
+        LL: 'D MMMM YYYY',
+        LLL: 'D MMMM YYYY HH:mm',
+        LLLL: 'dddd D MMMM YYYY HH:mm',
+    },
+    meridiemParse: /ص|م/,
+    isPM: function (input) {
+        return 'م' === input;
+    },
+    meridiem: function (hour, minute, isLower) {
+        if (hour < 12) {
+            return 'ص';
+        } else {
+            return 'م';
+        }
+    },
+    calendar: {
+        sameDay: '[اليوم على الساعة] LT',
+        nextDay: '[غدا على الساعة] LT',
+        nextWeek: 'dddd [على الساعة] LT',
+        lastDay: '[أمس على الساعة] LT',
+        lastWeek: 'dddd [على الساعة] LT',
+        sameElse: 'L',
+    },
+    relativeTime: {
+        future: 'في %s',
+        past: 'منذ %s',
+        s: 'ثوان',
+        ss: '%d ثانية',
+        m: 'دقيقة',
+        mm: '%d دقائق',
+        h: 'ساعة',
+        hh: '%d ساعات',
+        d: 'يوم',
+        dd: '%d أيام',
+        M: 'شهر',
+        MM: '%d أشهر',
+        y: 'سنة',
+        yy: '%d سنوات',
+    },
+    preparse: function (string) {
+        return string
+            .replace(/[٣٤٥٦٧٨٩٠]/g, function (match) {
+                return numberMap[match];
+            })
+            .split('') // reversed since negative lookbehind not supported everywhere
+            .reverse()
+            .join('')
+            .replace(/[١٢](?![\u062a\u0643])/g, function (match) {
+                return numberMap[match];
+            })
+            .split('')
+            .reverse()
+            .join('')
+            .replace(/،/g, ',');
+    },
+    postformat: function (string) {
+        return string
+            .replace(/\d/g, function (match) {
+                return symbolMap[match];
+            })
+            .replace(/,/g, '،');
+    },
+    week: {
+        dow: 0, // Sunday is the first day of the week.
+        doy: 6, // The week that contains Jan 6th is the first week of the year.
+    },
+});