Fail the build if any errors are logged while it runs.
Without this flag, non-fatal errors - such as a failure to compile a shader for a particular platform - do not
cause the build to fail, but may result in incorrect behaviour at runtime.
When this flag is set, errors logged from build callbacks also
fail the build, including these build callbacks:
IPreprocessBuildWithContext.OnPreprocessBuild,
IPostprocessBuildWithContext.OnPostprocessBuild,
IProcessSceneWithReport.OnProcessScene,
IPreprocessShaders.OnProcessShader, and
IPreprocessComputeShaders.OnProcessComputeShader.
This flag is equivalent to BuildOptions.StrictMode.