test: add coverage for napi_property_descriptor

We did not have test coverage for using a napi_value
pointing to a string or symbol for the name when
creating a property.  Add that coverage.

Backport-PR-URL: https://github.com/nodejs/node/pull/19447
PR-URL: https://github.com/nodejs/node/pull/13510


Reviewed-By: Jason Ginchereau <jasongin@microsoft.com>