flatpickr calendar display related options in powergrid datetime range filter

[ashvin-php]

Currently it doesn't look any staightforward way to pass flatpickr options for its calendar display at date/date-time column filters for powergrid. For example: For default language, suppose to set FirstDayOfWeek as Monday, its require configuration 'firstDayOfWeek' = 1.

So, tried to provide this firstDayOfWeek along with plugins.flatpickr.locale configuration array but it is not working.
Can anyone please help to achieve this?

'plugins' => [
/*
* https://flatpickr.js.org
*/
'flatpickr' => [
'locales' => [
'en' => [
'dateFormat' => 'd/m/Y H:i',
'enableTime' => true,
'time_24hr' => true,
'firstDayOfWeek' => 1,
],
],
],