util: improve .inspect() array grouping
Please have a look at the commit messages for a detailed description and check the changed tests for the result of these changes.
Refs: #27690 (closed)
// cc @nodejs/util
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