We enable the shared read-only heap which currently requires that the
snapshot used in different isolates in the same process to be the same.
Therefore --no-node-snapshot is a per-process option.

PR-URL: #42864
Refs: #42809
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>