Floods correctness fuzzers (e.g. https://crbug.com/1249941)

Revert "[x64][ia32] Activate Argument Count Consistency"

This reverts commit b7355768.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> [x64][ia32] Activate Argument Count Consistency
>
> Activate argument count consistency (receiver is always included in
> JS argument count) for x64 and ia32.
>
> Bug: v8:11112
> Change-Id: If60000b6566846c84f1042473d25d79bf5c86a9d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3160198
> Auto-Submit: Patrick Thier <pthier@chromium.org>
> Reviewed-by: Victor Gomes <victorgomes@chromium.org>
> Commit-Queue: Victor Gomes <victorgomes@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#76838}

Bug: v8:11112
Change-Id: I98e4127dcedaf7e19751ac29175700817b1b2202
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3162607Reviewed-by: Patrick Thier <pthier@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Patrick Thier <pthier@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76860}

BUILD.gn

@@ -351,8 +351,7 @@ declare_args() {
   # parameter count of function with JS linkage.
   # TODO(v8:11112): Remove once all architectures support the flag and it is
   # enabled unconditionally.
-  v8_include_receiver_in_argc =
-      v8_current_cpu == "x86" || v8_current_cpu == "x64"
+  v8_include_receiver_in_argc = false
 }
 
 # Derived defaults.