@supports not with Sass interpolation is broken

[cheit-epic]

When using not in combination with an interpolated Sass variable, the parser breaks with the error ( expected scss(css-lparentexpected)

$foo: "(display: grid)";
$foo2: "display: grid";

@mixin Mixin()
{
  @supports #{foo} {
    //works
  }

  @supports not #{$foo} {
    //doesn't work
  }

  @supports not (#{$foo2}) {
    //works
  }
}