[sandbox] Sandboxify Foreign external pointer

Bug: v8:10391
Change-Id: I4c5c209454db316fe86f379f6b2e6dfc7ba7754e
Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3757340Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81703}

include/v8-internal.h

@@ -327,7 +327,7 @@ constexpr uint64_t kExternalPointerTagShift = 48;
 // These tags must have 8 zeros and 8 ones, see comment above.
 // New entries should be added with state "sandboxed".
 #define EXTERNAL_POINTER_TAGS(V)                                      \
-  V(kForeignForeignAddressTag,       unsandboxed, 0b1000000001111111) \
+  V(kForeignForeignAddressTag,       sandboxed,   0b1000000001111111) \
   V(kNativeContextMicrotaskQueueTag, unsandboxed, 0b1000000010111111) \
   V(kEmbedderDataSlotPayloadTag,     unsandboxed, 0b1000000011011111) \
   V(kCodeEntryPointTag,              unsandboxed, 0b1000000011110111) \