Does `is` expression with template alias need fixing.

[SHOO]

On Wednesday, 15 March 2023 at 06:47:38 UTC, Elfstone wrote:
> ```D
> writeln(is(Vec3!float == Vec3!S, S)); // false
> ```

I recently faced a similar problem.

```d
import std;
static assert(isInstanceOf!(Array, Array!char)); // true
static assert(isInstanceOf!(Regex, Regex!char)); // false
```