AK: Hide the infallible make<T> factory function from the Kernel

This function has no users, nor should it ever be used in the kernel,
as all allocation failures in the Kernel should be explicitly checked.

AK/NonnullOwnPtr.h

@@ -159,8 +159,6 @@ inline NonnullOwnPtr<T> adopt_own(T& object)
  return NonnullOwnPtr<T>(NonnullOwnPtr<T>::Adopt, object);
 }
 
-#endif
-
 template<class T, class... Args>
 requires(IsConstructible<T, Args...>) inline NonnullOwnPtr<T> make(Args&&... args)
 {
@@ -174,6 +172,8 @@ inline NonnullOwnPtr<T> make(Args&&... args)
  return NonnullOwnPtr<T>(NonnullOwnPtr<T>::Adopt, *new T { forward<Args>(args)... });
 }
 
+#endif
+
 template<typename T>
 struct Traits<NonnullOwnPtr<T>> : public GenericTraits<NonnullOwnPtr<T>> {
  using PeekType = T*;
@@ -200,6 +200,6 @@ struct Formatter<NonnullOwnPtr<T>> : Formatter<const T*> {
 
 #if !defined(KERNEL)
 using AK::adopt_own;
-#endif
 using AK::make;
+#endif
 using AK::NonnullOwnPtr;