assert: fix .throws operator
assert.throws and assert.doesNotThrow set the operator to a internal function. That was actually not intended as the operator is not defined at all in those cases.
CI https://ci.nodejs.org/job/node-test-pull-request/12003/
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
assert