[msvc] LLVM failed to run 2 tests on Windows

LLVM failed to run 2 tests on Windows, could you please take a look?

**Repro steps:**
```
1. Open VS2022 x64 CMD.
2. git clone --config core.autocrlf=false https://github.com/llvm/llvm-project.git
3. cd llvm-project
4. mkdir build_amd64 && cd build_amd64
5. cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_SYSTEM_VERSION=10.0.26100.0 -DLLVM_ENABLE_PROJECTS="clang" -DCLANG_BUILD_LIFETIME_SAFETY_BENCHMARK_VENV=OFF ..\llvm
6. msbuild /m /p:Platform=x64 /p:Configuration=RelWithDebInfo /p:PreferredToolArchitecture=x64 LLVM.sln /t:Rebuild
7. set PATH=F:\tools\gnuwin32\bin;%PATH%
8. python.exe ../llvm/utils/lit/lit.py -v --no-progress-bar --param build_mode=RelWithDebInfo --param clang_site_config=./tools/clang/test/lit.site.cfg ./tools/clang/test -j 16
```

**Failed Tests:**
Clang :: Analysis/Scalable/ssaf-linker/linking.test
Clang :: Driver/modules-driver-malformed-manifest.cpp

[LLVM_test.log](https://github.com/user-attachments/files/26341597/LLVM_test.log)

Reproduce the failures using the listed VS2022, CMake, MSBuild, and lit commands. Start with the two named tests: Clang :: Analysis/Scalable/ssaf-linker/linking.test and Clang :: Driver/modules-driver-malformed-manifest.cpp, then inspect LLVM_test.log for the Windows-specific errors. Done means identifying and fixing the cause so both tests pass in the described configuration.

Written by the indexing model from the issue text.