Fixes #115922

This PR is prepared to separate existing https://github.com/pytorch/pytorch/pull/116926 and to apply suggestions in the review.

`scalar_t` which is defined as `c10::impl::ScalarTypeToCPPType<ScalarType::Half>::t` appears to be causing the issue with `Visual Studio 2022 17.8.4`  (coming with `MSVC 14.38.33130`)

Error message:
```
aten\src\ATen/cpu/vec/vec_base.h(150): fatal error C1001: Internal compiler error.
(compiler file 'D:\a_work\1\s\src\vctools\Compiler\CxxFE\sl\p1\c\toinil.c', line 910)
```

---

Related line was added for a similar issue before as a workaround (`scalar_t` definition) [Fix compile error for vs2022](https://github.com/pytorch/pytorch/pull/85958)

Pull Request resolved: https://github.com/pytorch/pytorch/pull/117497
Approved by: https://github.com/ezyang, https://github.com/malfet

(cherry picked from commit fa86fa7a61e7cb85e1d193ed69d41757abe43310)

Co-authored-by: Ozan Aydin <148207261+ozanMSFT@users.noreply.github.com>