When the devices language set to Arabic they automatically defaults to the "Arabic numbers" that can't be changed. which is annoying sometimes and can mess up the UI in some applications.
Not to mention as well, these numbers do not have a customization section to change the Clock font type in Lock screen & Always on Display, That is why at least we need to have the option to pick between the two when language is set to "Arabic"
Hopefully thats get added in One UI 7
Refer to pictures below
