[Issue 18263] selective import with same name masks out this reference in mixin template

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18263

--- Comment #4 from RazvanN <razvan.nitu1305 at gmail.com> ---
Now that using `this` as a type is deprecated, I think that we can close this.
What do you think Feep?

--