[Issue 18426] Conversion from Tuple with named fields to Tuple without named fields should work during compilation

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18426

--- Comment #1 from Seb <greensunny12 at gmail.com> ---
A minimal testcase

---
alias point = Tuple!(int, "x",  int, "y");
static assert(point(2, 2)[0] == 0);
---

--