test: update postmortem metadata test for V8 7.0

The V8 7.0 update requires the following adjustments to the
postmortem debugging metadata constants:

- v8dbg_class_SharedFunctionInfo__script__Object
  Use: v8dbg_class_SharedFunctionInfo__script_or_debug_info__Object

- v8dbg_class_SharedFunctionInfo__function_identifier_or_debug_info__Object
  Use: v8dbg_class_UncompiledData__inferred_name__String and
       v8dbg_class_SharedFunctionInfo__name_or_scope_info__Object

Refs: https://github.com/v8/v8/commit/c941f11abddf57844e9807503df1877f6f60c94a

PR-URL: https://github.com/nodejs/node/pull/22754


Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>