Compiler errors are passing through AR

[Mike Chang]

Describe the bug
Certain compiler errors are passing AR, specifically the C2220 (warning as error) and C1060 (compiler is out of heap space) errors in MSBuild

Failed Jenkins Job Information:
The name of the job that failed, job build number, and code snippit of the failure.

Attachments
C2220: https://jenkins.build.o3de.org/blue/rest/organizations/jenkins/pipelines/o3de-extras/branches/development/runs/131/nodes/645/steps/652/log/?start=0

C1060: https://jenkins.build.o3de.org/blue/rest/organizations/jenkins/pipelines/O3DE/branches/development/runs/4969/nodes/553/log/?start=0

Additional context
From Nick_L:

the actual chain of events in that linked jenkins file is

python.exe: ci_build.py:
         process_return = subprocess.run([build_cmd_path], cwd=cwd_dir, env=env_params)
                                    (cmd is build_windows.cmd)`

build_windows.cmd:

call ECHO [ci_build] cmake --build . --target %CMAKE_TARGET% --config %CONFIGURATION% %CMAKE_BUILD_ARGS% -- %CMAKE_NATIVE_BUILD_ARGS%
call cmake --build . --target %CMAKE_TARGET% --config %CONFIGURATION% %CMAKE_BUILD_ARGS% -- %CMAKE_NATIVE_BUILD_ARGS%
IF NOT %ERRORLEVEL%==0 GOTO :error

I don't see how that fails to echo the errorlevel up - I tested and yes, call (exe) does bubble up the errorlevel
could be the ol' ERRORLEVEL vs %ERRORLEVEL% vs !ERRORLEVEL! vs delaeyd expansion

[Mike Chang]

Resolved with #17794