Bug 24385 – Slicing a static array binds as non-ref when using auto ref

```d import std.stdio; void foo(ref int[2] val) { writeln("foo ref"); } void foo(int[2] val) { writeln("foo non-ref"); } void bar()(auto ref int[2] val) { static if(__traits(isRef, val)) writeln("bar ref"); else writeln("bar non-ref"); } void main() { int[4] x; int[2] y; foo(y); // foo ref bar(y); // bar ref foo(x[0 .. 2]); // foo ref bar(x[0 .. 2]); // bar non-ref } ``` They should all be ref for consistency.

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