[mjsunit] Reenable wasm/gc-frame test in predictable mode.

Bug: v8:5803
Change-Id: Ib5a4af363057d217a269b38ef5c54b0399a2aa55
Reviewed-on: https://chromium-review.googlesource.com/566803Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46554}

test/mjsunit/mjsunit.status

@@ -581,9 +581,6 @@
   # Skip tests that are known to be non-deterministic.
   'd8-worker-sharedarraybuffer': [SKIP],
   'd8-os': [SKIP],
-
-  # crbug.com/v8/5803
-  'wasm/gc-frame': [SKIP],
 }],  # 'predictable == True'
 
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