build: fix pointer compression builds

- Remove usage of deprecated V8::InitializeSandbox().
- External code space and pointer compression shared cage must
  be enabled when pointer compression builds are enabled.
- We cannot enable the sandbox because that requires allocating
  the array buffer backing stores in the sandbox - we currently
  have many backing stores tied to pointers from C++ land that
  are not even necessarily dynamic (e.g. in static storage).
  Until we manage to get rid of all those, sandbox cannot be
  enabled. Note that enabling pointer compression without
  enabling sandbox is unsupported by V8, and can be broken
  at any time.

PR-URL: https://github.com/nodejs/node/pull/58171
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

common.gypi

@@ -80,6 +80,7 @@
     # Variables controlling external defines exposed in public headers.
     'v8_enable_map_packing%': 0,
     'v8_enable_pointer_compression_shared_cage%': 0,
+    'v8_enable_external_code_space%': 0,
     'v8_enable_sandbox%': 0,
     'v8_enable_v8_checks%': 0,
     'v8_enable_zone_compression%': 0,
@@ -113,6 +114,7 @@
       ['target_arch in "arm ia32 mips mipsel"', {
         'v8_enable_pointer_compression': 0,
         'v8_enable_31bit_smis_on_64bit_arch': 0,
+        'v8_enable_external_code_space': 0,
         'v8_enable_sandbox': 0
       }],
       ['target_arch in "ppc64 s390x"', {
@@ -456,6 +458,9 @@
       ['v8_enable_sandbox == 1', {
         'defines': ['V8_ENABLE_SANDBOX',],
       }],
+      ['v8_enable_external_code_space == 1', {
+        'defines': ['V8_EXTERNAL_CODE_SPACE',],
+      }],
       ['v8_deprecation_warnings == 1', {
         'defines': ['V8_DEPRECATION_WARNINGS',],
       }],