This fixes a crash related to access after free on platforms that
store the MacroAssembler as a pointer. The intended behavior is
restored by explicitly setting the flag in the macro assembler
instead of using NoRootArrayScope.

Landing as TBR as it's blocking fuzzers and fix seems simple enough.

TBR=jgruber@chromium.org
R=jyan@ca.ibm.com
R=miladfar@ca.ibm.com

Bug: chromium:1057018
Change-Id: Ib6de82b47bb1abb74da58b3d476b359669372bb5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2080242
Commit-Queue: Emanuel Ziegler <ecmziegler@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66500}