util,errors: make display of errors consistent with browsers #15765
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In Chrome, adding or mutating properties does not change the output of
Error
objects displayed viaconsole.log()
etc. This changereplicates that behavior in Node.js.
This is blocked until #15694 lands as some of the changes depend on that PR.
Checklist
make -j4 test
(UNIX), orvcbuild test
(Windows) passesAffected core subsystem(s)
util tests