Visual Studio kits should not add the PATH twice when configuring the developer environment

### Brief Issue Summary

NVCC has been failing to run when building within VSCode and using the Ninja generator on Windows. Changing the generator or running the exact same CMake command line from a terminal works just fine - even the VSCode integrated terminal.

I've noted that this affects;
- Enabling CUDA from the CMake `project` command: `project(X CUDA)`
- Using `check_language(CUDA)`
- Trying to build a previously configured project which invokes `nvcc`.

With all these situations only failing when invoke from the vscode-cmake-tools extension and using the Ninja generator.

### CMake Tools Diagnostics

```shell
{
"os": "win32",
"vscodeVersion": "1.72.2",
"cmtVersion": "1.12.27",
"configurations": [
{
"folder": "d:\\projects\\test\\check-cuda",
"cmakeVersion": "3.24.2",
"configured": true,
"generator": "Ninja",
"usesPresets": false,
"compilers": {
"C": "C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe",
"CXX": "C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe"
}
}
],
"cpptoolsIntegration": {
"isReady": true,
"hasCodeModel": false,
"activeBuildType": "Debug",
"buildTypesSeen": [
"Debug"
],
"requests": [],
"responses": [],
"partialMatches": [],
"targetCount": 0,
"executablesCount": 0,
"librariesCount": 0,
"targets": []
},
"settings": [
{
"communicationMode": "automatic",
"useCMakePresets": "auto",
"configureOnOpen": false
}
]
}
```

### Debug Log

```shell
[main] Configuring folder: check-cuda
[main] Saving open files before configure/build
[driver] Start configure
[driver] Running pre-configure checks and steps
[cmakefileapi-driver] Configuring using kit
[cmakefileapi-driver] Invoking CMake C:\Program Files\CMake\bin\cmake.EXE with arguments ["--no-warn-unused-cli","-DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON","-DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE","-DCMAKE_BUILD_TYPE:STRING=Debug","-Sd:/projects/test/check-cuda","-Bd:/projects/test/check-cuda/build","-G","Ninja"]
[proc] Executing command: "C:\Program Files\CMake\bin\cmake.EXE" --no-warn-unused-cli -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_BUILD_TYPE:STRING=Debug -Sd:/projects/test/check-cuda -Bd:/projects/test/check-cuda/build -G Ninja
[cmake] Not searching for unused variables given on the command line.
[cmake] STDOUT:
[cmake] d:\projects\test\check-cuda\build>call "C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/HostX64/x64/../../../../../../../VC/Auxiliary/Build/vcvars64.bat"
[cmake] **********************************************************************
[cmake] ** Visual Studio 2019 Developer Command Prompt v16.11.20
[cmake] ** Copyright (c) 2021 Microsoft Corporation
[cmake] **********************************************************************
[cmake] #$ C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/HostX64/x64/../../../../../../../VC/Auxiliary/Build/vcvars64.bat
[cmake] nvcc fatal : Could not set up the environment for Microsoft Visual Studio using 'C:/Program Files (x86)/Microsoft Visual Studio/2019/Professional/VC/Tools/MSVC/14.29.30133/bin/HostX64/x64/../../../../../../../VC/Auxiliary/Build/vcvars64.bat'
[cmake]
[cmake] STDERR: The input line is too long.
[cmake] -- Configuring done
[cmake] The syntax of the command is incorrect.
[cmake]
[cmake] -- Generating done
[cmake] -- Build files have been written to: D:/projects/test/check-cuda/build
[cmakefileapi-parser] Read reply folder: d:\projects\test\check-cuda\build\.cmake\api\v1\reply
[cmakefileapi-parser] Found index files: ["cache-v2-8bdb1868777d35eaa737.json","cmakeFiles-v1-cd0e12a8d8786ce9bc1b.json","codemodel-v2-5c2cef2c6329c1e141f5.json","directory-.-Debug-d0094a50bb2071803777.json","index-2022-10-31T23-54-47-0228.json","toolchains-v1-3cab24418fee7e253880.json"]
[cache] Reading CMake cache file d:/projects/test/check-cuda/build/CMakeCache.txt
[cache] Parsing CMake cache string
[visual-studio] OK running C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build\vcvarsall.bat x64, env vars: {"DevEnvDir":"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\IDE\\","Framework40Version":"v4.0","FrameworkDir":"C:\\Windows\\Microsoft.NET\\Framework64\\","FrameworkDIR64":"C:\\Windows\\Microsoft.NET\\Framework64\\","FrameworkVersion":"v4.0.30319","FrameworkVersion64":"v4.0.30319","INCLUDE":"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\ATLMFC\\include;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\include;C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.8\\include\\um;C:\\Program Files (x86)\\Windows Kits\\10\\include\\10.0.22000.0\\ucrt;C:\\Program Files (x86)\\Windows Kits\\10\\include\\10.0.22000.0\\shared;C:\\Program Files (x86)\\Windows Kits\\10\\include\\10.0.22000.0\\um;C:\\Program Files (x86)\\Windows Kits\\10\\include\\10.0.22000.0\\winrt;C:\\Program Files (x86)\\Windows Kits\\10\\include\\10.0.22000.0\\cppwinrt","LIB":"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\ATLMFC\\lib\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\lib\\x64;C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.8\\lib\\um\\x64;C:\\Program Files (x86)\\Windows Kits\\10\\lib\\10.0.22000.0\\ucrt\\x64;C:\\Program Files (x86)\\Windows Kits\\10\\lib\\10.0.22000.0\\um\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\ATLMFC\\lib\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\lib\\x64;C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.8\\lib\\um\\x64;C:\\Program Files (x86)\\Windows Kits\\10\\lib\\10.0.22000.0\\ucrt\\x64;C:\\Program Files (x86)\\Windows Kits\\10\\lib\\10.0.22000.0\\um\\x64","LIBPATH":"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\ATLMFC\\lib\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\lib\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\lib\\x86\\store\\references;C:\\Program Files (x86)\\Windows Kits\\10\\UnionMetadata\\10.0.22000.0;C:\\Program Files (x86)\\Windows Kits\\10\\References\\10.0.22000.0;C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\ATLMFC\\lib\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\lib\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\MSVC\\14.29.30133\\lib\\x86\\store\\references;C:\\Program Files (x86)\\Windows 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Studio\\2019\\Professional\\Team Tools\\Performance Tools\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Team Tools\\Performance Tools;C:\\Program Files (x86)\\Microsoft Visual Studio\\Shared\\Common\\VSPerfCollectionTools\\vs2019\\\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\Shared\\Common\\VSPerfCollectionTools\\vs2019\\;C:\\Program Files (x86)\\Microsoft SDKs\\Windows\\v10.0A\\bin\\NETFX 4.8 Tools\\x64\\;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\IDE\\CommonExtensions\\Microsoft\\FSharp\\Tools;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\Tools\\devinit;C:\\Program Files (x86)\\Windows Kits\\10\\bin\\10.0.22000.0\\x64;C:\\Program Files (x86)\\Windows Kits\\10\\bin\\x64;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\\\MSBuild\\Current\\Bin;C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319;C:\\Program Files (x86)\\Microsoft Visual 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Studio\\2019\\Professional\\Common7\\IDE\\VC\\Linux\\bin\\ConnectionManagerExe;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\Tools\\Llvm\\x64\\bin;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\IDE\\CommonExtensions\\Microsoft\\CMake\\CMake\\bin;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\IDE\\CommonExtensions\\Microsoft\\CMake\\Ninja;C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\IDE\\VC\\Linux\\bin\\ConnectionManagerExe","UCRTVersion":"10.0.22000.0","UniversalCRTSdkDir":"C:\\Program Files (x86)\\Windows Kits\\10\\","VCIDEInstallDir":"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\Common7\\IDE\\VC\\","VCINSTALLDIR":"C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Professional\\VC\\","VCToolsRedistDir":"C:\\Program Files (x86)\\Microsoft Visual 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[extension] [8101] cmake.configure finished (returned 0)
```

### Additional Information

I've distilled this down to a very simple CMake script which shows the failure. Hopefully the following steps will reproduce the issue on other Windows computers:

1. Open the folder containing the attached `CMakeLists.txt` file in VSCode
2. Set the CMake generator to Ninja: `"cmake.generator": "Ninja"` in `settings.json`
3. Open the command palette and run `CMake: Configure`
4. Observe the failure in the Output window
5. From the top of the Output window, copy the CMake command line.
6. Open the VSCode Integrated Terminal
7. Paste and run the copied command line
8. Observe the expected, successful behaviour

The diagnostics (attached) seem to cover most of the relevant items, but I'll add the Ninja version is 1.10.2.

The failure output I observe has been added to the Debug Log requested (with `"cmake.loggingLevel": "debug"` set) modified slightly for some path sanitisation.

[CMakeLists.txt](https://github.com/microsoft/vscode-cmake-tools/files/9905664/CMakeLists.txt)

Start by reviewing the Visual Studio kit environment setup implicated by the diagnostics and debug log. Reproduce the issue with a CUDA project using the Ninja generator and the shown CMake configuration flow, then trace where the kit environment is applied twice. Done means CUDA configuration and builds work in VS Code without duplicating PATH or producing the Windows command-line error.

Written by the indexing model from the issue text.