Wrong result with overloaded operators

The following snippet produces the wrong result, probably due to the decomposition:
```cpp
#include "kassert/kassert.hpp"

#include <cassert>

struct A {
  bool operator==(const A&) && {
    return true;
  }
  bool operator==(const A&) const & {
    return false;
  }
};

int main() {
    assert(A{} == A{});
    KASSERT(A{} == A{});
}
```