Module STD : Can't use crtdbg header

Describe the bug

It is currently impossible to use the crtdbg header with the std module
crtdbg.h is not a STL header, so it should not be affected by the current limitation of mixing import std and includes.

Command-line test case

C:\Temp>type repro.cpp
import std;
#include <crtdbg.h>

C:\Temp>cl.exe /std:c++latest /EHsc /nologo /c .\repro.cpp

C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.40.33807\include\vcruntime_new.h(27): error C2011: 'std::align_val_t': 'unsigned enum' type redefinition
C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.40.33807\include\vcruntime_new.h(27): note: see declaration of 'std::align_val_t'

Expected behavior

It should compile but does not

STL version

    Microsoft Visual Studio Community 2022
    Version 17.10.0 Preview 7.0

Additional context

This bug looks similar on the surface (but is probably unrelated) to the mixing of std module and <intrin.h> (which has been fixed but not yet made available in previews of Visual Studio)

Use the supplied repro.cpp and cl.exe command first. Trace the interaction between import std, crtdbg.h, and vcruntime_new.h, then add or update a regression test showing that import std; followed by #include <crtdbg.h> compiles successfully.