Function operator new

include/stdexec/__detail/__task.hpp:649–652

When no allocator passed to the coroutine:

    // When no allocator passed to the coroutine:
    static void* operator new(size_t __bytes)
    {
      return __promise::operator new(__bytes, std::allocator_arg, std::allocator<std::byte>{});
    }

    static void operator delete(void* __ptr, size_t __bytes) noexcept
    {