Revert "[rwx][mac] Enable fast W^X on Apple Silicon (M1)"

This reverts commit e8cac377.

Reason for revert: breaking Mac arm64 bots

Original change's description:
> [rwx][mac] Enable fast W^X on Apple Silicon (M1)
>
> Bug: v8:12797
> Change-Id: I53bb803dd77db5bdd42b1a1b4b568e63857adf31
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3598861
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80396}

Bug: v8:12797
Change-Id: Ieb31d44d40a3b7c4e0b8f3914fcb89346ee3e2f8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3630083
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#80398}

src/common/globals.h

@@ -188,7 +188,8 @@ using CodeT = Code;
 //
 #if V8_HAS_PTHREAD_JIT_WRITE_PROTECT && \
     !(defined(V8_COMPRESS_POINTERS) && !defined(V8_EXTERNAL_CODE_SPACE))
-#define V8_HEAP_USE_PTHREAD_JIT_WRITE_PROTECT true
+// TODO(v8:12797): enable fast W^X permissions switching on Apple Silicon.
+#define V8_HEAP_USE_PTHREAD_JIT_WRITE_PROTECT false
 #else
 #define V8_HEAP_USE_PTHREAD_JIT_WRITE_PROTECT false
 #endif