Revert "[ext-code-space] Enable Code-less embedded builtins"

This reverts commit 40901824.

Reason for revert: UBSan errors (https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64%20UBSan/22822/overview)

Original change's description:
> [ext-code-space] Enable Code-less embedded builtins
>
> Bug: v8:11880, v8:12592
> Change-Id: I8d3d6ad0a4c26eb1fea2a998ffeddd1d96afa690
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3784593
> Commit-Queue: Igor Sheludko <ishell@chromium.org>
> Reviewed-by: Jakob Linke <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82642}

Bug: v8:11880, v8:12592
Change-Id: Iaf0f87d2e5c1e1e3876d3edc6a82c8578eed81bb
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3846471
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#82646}

src/common/globals.h

@@ -157,7 +157,7 @@ const size_t kShortBuiltinCallsOldSpaceSizeThreshold = size_t{2} * GB;
 // This flag enables the mode when V8 does not create trampoline Code objects
 // for builtins. It should be enough to have only CodeDataContainer objects.
 // TODO(v8:11880): remove the flag one the Code-less builtins mode works.
-#define V8_REMOVE_BUILTINS_CODE_OBJECTS true
+#define V8_REMOVE_BUILTINS_CODE_OBJECTS false
 class CodeDataContainer;
 using CodeT = CodeDataContainer;
 #else