[mjsunit] Re-enabled regress-678917 test on windows

Responsible CL reverted:
https://chromium-review.googlesource.com/c/v8/v8/+/1891512
Test should now be stable again.

Bug: v8:9192
Change-Id: I0cc65ab542f5e9e2c000506a7077bfaa7fefc92a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1893341Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64689}

test/mjsunit/mjsunit.status

@@ -796,9 +796,6 @@
   'tzoffset-transition-new-york-noi18n': [SKIP],
   'tzoffset-seoul': [SKIP],
   'tzoffset-seoul-noi18n': [SKIP],
-
-  # Flaky OOM test BUG(v8:9192)
-  'regress/regress-678917': [PASS, FAIL],
 }],  # 'system == windows'
 
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