[test] Temporarily disable OffThreadLargeObjectSpaceMerge test on TSAN

Bug: v8:10129
Bug: chromium:1011762
Change-Id: I1c2cc16326e2efb9f126ddcc0cc232229a94d0ae
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2002545
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65804}

test/unittests/unittests.status

@@ -39,6 +39,11 @@
   # https://crbug.com/v8/9380
   # The test is broken and needs to be fixed to use separate isolates.
   'BackingStoreTest.RacyGrowWasmMemoryInPlace': [SKIP],
+
+  # https://crbug.com/v8/10129
+  # This functionality is only used in tests so far, so unblocking TSAN while
+  # its bugs are ironed out.
+  'SpacesTest.OffThreadLargeObjectSpaceMerge': [SKIP],
 }],  # tsan == True
 
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