CiviReport does not localize custom date fields when exporting to CSV

CiviReport does not localize custom fields of type Date

How to reproduce

1. Set localization settings: Date Format Complete date to %d-%m-%Y
2. Add a custom group for cases
3. Add a custom field of Type Date and no time.
4. Enter a value such as 31-04-2021 (1st of april 2021)
5. Create a new CiviCase detail report. Check the column to display the custom field.
6. Export the report to CSV

Expected result

Value of the custom field displayed as 01-04-2021 as it is shown in the report and according to the localization setting.

Actual result

Value of custom field is displayed as 2021-04-01 which is ISO format.

Comment

The format for iso format is hard coded in: https://github.com/civicrm/civicrm-core/blob/master/CRM/Report/Utils/Report.php#L270

I am not sure if that is the desired behavior. I dont think so as the custom fields of type money are localized into a CSV export. So I would argue that the date should also be formatted according to the localization settings.