test: add second argument to assert.throws

This adds RegExp or error constructor arguments to the remaining places
where it is missing in preparation for the commit that will enforce the
presence of at least two arguments.

PR-URL: https://github.com/nodejs/node/pull/12270


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>