C++23 literal operator for std::size_t not recognized

Environment

• OS and Version: Win11
• VS Code Version: 1.98.2
• C/C++ Extension Version: 1.23.6

Bug Summary and Steps to Reproduce

Bug Summary:

C++23 added literal operators for std::size_t, and MSVC added support for them with 19.43. I am using cl.exe as compiler for intellisense and have the C++ version set to C++23. I get squiggly line errors when using the Z and UZ suffixes.

Steps to reproduce:

1. Set intellisense compiler to windows-msvc-x64
2. Open a C++23 source file
3. Use the Z or UZ literal operators

Expected behavior:
Accepted as correct literal.

Configuration and Logs

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceFolder}/**"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE",
                "_UNICODE"
            ],
            "windowsSdkVersion": "10.0.22621.0",
            "intelliSenseMode": "windows-msvc-x64",
            "cppStandard": "c++23",
            "cStandard": "c23"
        }
    ],
    "version": 4
}

Other Extensions

No response

Additional context

No response

Reproduce the issue in a C++23 source file using the supplied Windows MSVC IntelliSense configuration and the Z or UZ suffixes. Trace the IntelliSense handling of these C++23 literal operators; done means the literals are accepted without squiggle errors when using MSVC 19.43 or later.