test: use a different external object in test-util-inspect
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
test
This test can fail if process.stdin._handle doesn't exist, which can happen in some environments. The test just wants to check that external objects are represented properly, so we can pass in a JSStream external object instead.