Add --error-on-warn to vcbuild.bat

[danbev]

Is your feature request related to a problem? Please describe.
Add the --error-on-warn flag that was introduced in #32685 to vcbuild.bat

Describe the solution you'd like
When --error-on-warn flag is specified any compiler warnings should fail the build.

[github-actions]

There has been no activity on this feature request for 5 months and it is unlikely to be implemented. It will be closed 6 months after the last non-automated comment.

For more information on how the project manages feature requests, please consult the feature request management document.

[github-actions]

There has been no activity on this feature request and it is being closed. If you feel closing this issue is not the right thing to do, please leave a comment.

For more information on how the project manages feature requests, please consult the feature request management document.