[wasm] Disable mjsunit/wasm/atomics on arm bots

The test is flaky on that hardware but seems to work just fine on other
arm hardware.

R=machenbach@chromium.org

Bug: v8:10948
Change-Id: Ic60cc23c1b4825623a91e3defcd21eada74554a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3043954
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75867}

test/mjsunit/mjsunit.status

@@ -73,6 +73,9 @@
   # https://crbug.com/1129854
   'tools/log': ['arch == arm or arch == arm64', SKIP],
 
+  # https://crbug.com/v8/10948
+  'wasm/atomics': [PASS, ['arch == arm and not simulator_run', SKIP]],
+
   ##############################################################################
   # Tests where variants make no sense.
   'd8/enable-tracing': [PASS, NO_VARIANTS],