Custom command error handling broken with Visual Studio & CMP0147

Steps to reproduce

• Create a simple CMakeLists.txt with a failing custom command with CMP0147 enabled (CMake >=3.27), e.g.:

  cmake_minimum_required(VERSION 3.27)
  project(myproj)
  
  add_custom_target(mytgt ALL COMMAND oopsie-this-command-doesnt-exist)

• Configure with Visual Studio generator
• Try to build mytgt
• Observe second line in the error about VCEnd:

    1>
    'oopsie-this-command-doesnt-exist' is not recognized as an internal or external command, operable program or batch file.
    The system cannot find the batch label specified - VCEnd
  C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(237,5): error MSB8066: 
  Custom build for 'C:\Users\StevenWdV\Downloads\cmaketest\build\CMakeFiles\9ef0abe342bf60f8c32deec84aa0c866\mytgt.rule' exited with code 1.
  [C:\Users\StevenWdV\Downloads\cmaketest\build\mytgt.vcxproj]

Expected behavior

Just 'oopsie-this-command-doesnt-exist' is not recognized as an internal or external command, operable program or batch file..

Not The system cannot find the batch label specified - VCEnd.

Cause

With CMP0147 NEW, CMake adds <BuildInParallel>true</BuildInParallel> to the generated <CustomBuild>. This makes it a ParallelCustomBuild instead of a CustomBuild according to a condition in Microsoft.CppCommon.targets, as can also be observed by the line numbers in the error: 237 (ParallelCustomBuild) above, but 254 (CustomBuild) with CMP0147 set to OLD (in which case we don't see the VCEnd error).

While CustomBuild has BuildSuffix set to (newline):VCEnd, ParallelCustomBuild does not, meaning the if %errorlevel% neq 0 goto :VCEnd in the script generated by CMake fails. Looking at the ParallelCustomBuild docs, it looks like BuildSuffix does not exist.