Revert "[flag] Disable W^X behind --future"

This reverts commit b06f3832.

Reason for revert: Typo in mac arm64 config

Original change's description:
> [flag] Disable W^X behind --future
>
> Measure the impact of W^X on --future bots
>
> Change-Id: I6f60cc835471fa62ec0871101eca5d3022ece519
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3168277
> Commit-Queue: Leszek Swirski <leszeks@chromium.org>
> Auto-Submit: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76908}

Change-Id: Ia6084a838bc507bc4c988d13d1a991c7604e4653
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3168619
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76909}

src/flags/flag-definitions.h

@@ -509,7 +509,6 @@ DEFINE_WEAK_IMPLICATION(future, flush_baseline_code)
 #if V8_SHORT_BUILTIN_CALLS
 DEFINE_WEAK_IMPLICATION(future, short_builtin_calls)
 #endif
-DEFINE_WEAK_VALUE_IMPLICATION(future, write_protect_code_memory, false)
 
 // Flags for jitless
 DEFINE_BOOL(jitless, V8_LITE_BOOL,
@@ -1181,13 +1180,7 @@ DEFINE_INT(scavenge_task_trigger, 80,
 DEFINE_BOOL(scavenge_separate_stack_scanning, false,
             "use a separate phase for stack scanning in scavenge")
 DEFINE_BOOL(trace_parallel_scavenge, false, "trace parallel scavenge")
-#if !defined(V8_OS_MACOSX) || !defined(V8_HOST_ARCH_ARM64)
 DEFINE_BOOL(write_protect_code_memory, true, "write protect code memory")
-#else
-// Must be enabled on M1.
-DEFINE_READONLY_BOOL(write_protect_code_memory, true,
-                     "write protect code memory")
-#endif
 #if defined(V8_ATOMIC_MARKING_STATE) && defined(V8_ATOMIC_OBJECT_FIELD_WRITES)
 #define V8_CONCURRENT_MARKING_BOOL true
 #else