[cctest] Disable FuzzAssemble* tests on arm64 sim

Tests are flaky on arm64 sim and arm64 sim - msan bots.

Bug: v8:12637
Change-Id: If9570ceb8af375d12ddd375274aea1ebc0078e63
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471634
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79150}

test/cctest/cctest.status

@@ -185,6 +185,9 @@
   'test-api/ExternalArrays': [PASS, SLOW],
   'test-api/Threading*': [SKIP],
   'test-cpu-profiler/MultipleIsolates': [PASS, ['not pointer_compression', SLOW]],
+
+  # https://crbug.com/v8/12637
+  'test-code-generator/FuzzAssemble*': [SKIP],
 }],  # 'arch == arm64 and simulator_run'
 
 ['arch == arm64 and system == macos and not simulator_run', {