n-api: correct bug in napi_get_last_error

napi_get_last_error returns incorrect napi_status.

Backport-PR-URL: https://github.com/nodejs/node/pull/30532
PR-URL: https://github.com/nodejs/node/pull/28702


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gabriel Schulhof <gabriel.schulhof@intel.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>