We are migrating towards using internalBinding(\'options\').getOptions()
instead of process.binding(\'config\') to access the value of the
--experimental-vm-modules command line option.

If the process.config.variables.v8_enable_inspector
is undefined or set to 0 and the sendInspectorCommand
function is called, it should call the error function
and should NOT call the callback function.

Since the process exists after the test, there is no need to backup and
restore the process.config.variables.v8_enable_inspector variable.