[BUG] Basic initialization with enums doesn't work.

[leejy12]

Describe the bug
Commit: d43a1f6
Basic initialization with explicitly typed enums don't work.

To Reproduce

cpp2:

MyEnum: @enum type = {
    Foo;
    Bar;
}

main: () -> i32 = {
    x: MyEnum = MyEnum::Foo;
}

cpp1:

[[nodiscard]] auto main() -> cpp2::i32
{
    MyEnum x{MyEnum::Foo}; // Error!
}

The type of MyEnum::Foo is cpp2::strict_value<cpp2::i8, MyEnum, false> which can't be converted to MyEnum class.

[JohelEGP]

That's right.
I mentioned this at a92fdc8#r126543753.

[hsutter]

Yup, this is next on my list.