Step-75: use well-formed deleter

[tamiko]

LLVM/Clang's libc++ library version 13/14 got stricter by checking
requirements of the deleter, in particular, according to [1] a deleter
must pass the requirement __shared_ptr_deleter_ctor_reqs which is
defined as follows:

template <class _Dp, class _Pt, class = decltype(declval<_Dp>()(declval<_Pt>()))>
static true_type __well_formed_deleter_test(int);

template <class, class>
static false_type __well_formed_deleter_test(...);

template <class _Dp, class _Pt>
struct __well_formed_deleter : decltype(__well_formed_deleter_test<_Dp, _Pt>(0)) {};

template<class _Dp, class _Tp, class _Yp>
struct __shared_ptr_deleter_ctor_reqs
{
    static const bool value = __compatible_with<_Tp, _Yp>::value &&
                              is_move_constructible<_Dp>::value &&
                              __well_formed_deleter<_Dp, _Tp*>::value;
};

Unfortunately, our construct

coarse_grid_triangulations.emplace_back(
  const_cast<Triangulation<dim> *>(&(dof_handler.get_triangulation())),
  [](auto &) {});

does not pass this test. The issue is that the deleter takes a pointer,
not a reference which, so the lambda [](auto &){} does not pass above
__shared_ptr_deleter_ctor_reqs.

While at it, remove the const cast: coarse_grid_triangulations is
declared as a vector holding a shared_ptr<const Triangulation<dim>>,
thus we should simply take the address and not convert to a non-const
object.

Fixes
https://cdash.dealii.43-1.org/viewBuildError.php?buildid=1614
https://cdash.dealii.43-1.org/viewBuildError.php?buildid=1613

[1] https://github.com/llvm/llvm-project/blob/main/libcxx/include/__memory/shared_ptr.h

Closes #13613

[tamiko]

/rebuild

[marcfehling]

This should fix #13613, right?

[tamiko]

@marcfehling yes. I wasn't aware of the issue.