Display asterisk for required fields on customer page in admin area

[RomanovM]

nopCommerce version: 4.50

Expected behavior:
When I try to add a new customer on the admin page, I can clearly see the required fields.
Actual behavior:
Only the Customer roles has a red asterix, the email address or any field I marked as required misses this information.

Source: https://www.nopcommerce.com/boards/topic/94179/show-required-field-on-admin-page

See also: #1449

[AndreiMaz]

Please note that if we decide to implement that, then we should ensure that it's done for all pages in admin area as well

[RomanovM]

After some consideration we've decided not to implement this functionality.