[mjsunit] Allow flaky test to pass or fail

Some recent runs had the test passing, which painted the bot red.

NOTRY=true
NOTREECHECKS=true
TBR=mstarzinger@chromium.org,rmcilroy@chromium.org


Bug: v8:8040
Change-Id: Icc289f6615be299e9e401bc42e16a2e712f1445c
Reviewed-on: https://chromium-review.googlesource.com/1184902Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55304}

test/mjsunit/mjsunit.status

@@ -645,7 +645,7 @@
   'icu-date-to-string': [FAIL],
   'regress/regress-6288': [FAIL],
   # OOM:
-  'regress/regress-752764': [FAIL],
+  'regress/regress-752764': [PASS, FAIL],
 }],  # 'system == android'
 
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