How to change kendo UI MVC datetimepicker (v2021) to show like persian datetimepicker?

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C#

MVC5

Kendo-UI

how to change Kendo UI MVC DateTimePicker (v2021) to show like Persian DateTimePicker?
all internet links are belong to v2018 and when I do the same thing for v2021 that not working
for example I did changes like this video
this GitHub project work great for v2018
I do not know how to change kendo js files in v2021

What I have tried:

according to this video I downloaded attacked files and
I copy paste below files to Kendo.all.min.js file
1)kendo.jalalidate.min.js
2)kendo.culture.fa-IR.min.js
3)kendo.persiandatepicker.min.js
4)kendo.persiancalendar.min.js
then change these functions parameters name according what it is in kendo.all.min.js and pasted them in place that is shown in video

var toString = function (value, fmt, culture) {
    if (fmt) {
        if (objectToString.call(value) === '[object Date]' || value instanceof JalaliDate) {
            return formatDate(value, fmt, culture);
        } else if (typeof value === NUMBER) {
            return formatNumber(value, fmt, culture);
        }
    }
    return value !== undefined ? value : '';
};

function internalParseDate(value, formats, culture, strict) {
    if (culture = "fa-IR") {
        if (objectToString.call(value) === '[object Date]' || value instanceof JalaliDate)
            return value;
        if (formats != undefined) {
            if (value !== null && value !== "" && value != undefined && (formats == "yyyy/MM/dd" || formats[0] == "yyyy/MM/dd")) 
                return JalaliDate.parse(value);
        }
    }
    else {
        if (objectToString.call(value) === '[object Date]') {
            return value;
        }
    }
    var idx = 0;
    var date = null;
    var length;
    var tzoffset;
    if (value && value.indexOf('/D') === 0) {
        date = dateRegExp.exec(value);
        if (date) {
            date = date[1];
            tzoffset = offsetRegExp.exec(date.substring(1));
            date = new Date(parseInt(date, 10));
            if (tzoffset) {
                tzoffset = parseMicrosoftFormatOffset(tzoffset[0]);
                date = kendo.timezone.apply(date, 0);
                date = kendo.timezone.convert(date, 0, -1 * tzoffset);
            }
            return date;
        }
    }
    culture = kendo.getCulture(culture);
    if (!formats) {
        formats = getDefaultFormats(culture);
    }
    formats = isArray(formats) ? formats : [formats];
    length = formats.length;
    for (; idx < length; idx++) {
        date = parseExact(value, formats[idx], culture, strict);
        if (date) {
            return date;
        }
    }
    return date;
}

but this is for v2018 not working for v2021