Why enum overrides the str and repr methods

[wenjuno]

It is great we support flag and int enum now. The implementation creates builtin Python enum type, but why does it want to override the __str__ and __repr__ methods? What is the problem with the implementation of the builtin type? Thanks.

nanobind/src/nb_enum.cpp

Lines 75 to 76 in d4b245a

	result.attr("__str__") = enum_mod.attr(is_flag ? factory_name : "Enum").attr("__str__");
	result.attr("__repr__") = result.attr("__str__");

[wojdyr]

#I was also wondering about it recently (#1008)