test: rename tests with descriptive filenames

Refs: https://github.com/nodejs/node/issues/19105
Refs: https://github.com/nodejs/node/blob/master/doc/guides/writing-tests.md#test-structure

PR-URL: https://github.com/nodejs/node/pull/19608


Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>