assert: loose deep equal should not compare symbol properties

This is the way it's currently documented and that seems appropriate
for loose equal assertions. The change was not intentional.

Fixes: https://github.com/nodejs/node/issues/27652

PR-URL: https://github.com/nodejs/node/pull/27653


Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>