GetCurrentProcessExecutionOption should allow a process name to be passed in

Current code appends the process name from GetModuleFileNameW:

    // Lookup a DWORD value under HKLM\...\Image File Execution Options\<current process name>
    inline DWORD GetCurrentProcessExecutionOption(PCWSTR valueName, DWORD defaultValue = 0)
    {
        auto filePath = wil::GetModuleFileNameW<wil::unique_cotaskmem_string>();
        if (auto lastSlash = wcsrchr(filePath.get(), L'\\'))
        {
            const auto fileName = lastSlash + 1;
            auto keyPath = wil::str_concat<wil::unique_cotaskmem_string>(LR"(SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\)",
                fileName);

My code (for reasons) needs to use a value different from a process name that hosts my DLL and other DLLs, so I'd like a unique identifier. I realize this is probably overloading the intention of this method, but it would be convenient to have:

    inline DWORD GetCurrentProcessExecutionOption(PCWSTR valueName, DWORD defaultValue = 0, PCWSTR fileNameOverride = nullptr)
    {
      if (fileNameOverride) { fileName = filePathOverride; }
      else { /* existing filePath/lastSlash code */ }
       ...
    }

Find GetCurrentProcessExecutionOption and review its existing GetModuleFileNameW and Image File Execution Options path construction. Confirm how an optional file name should interact with the current-process fallback, then update the function and its coverage so callers can select a different identifier without changing existing behavior.