Skip code flushing tests failing on NumFuzz bots

Bug: v8:12088
Change-Id: Ibc4db95125d44eca110829f1c043e769de5bd349
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3123416
Commit-Queue: Mythri Alle <mythria@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Mythri Alle <mythria@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76527}

test/mjsunit/mjsunit.status

@@ -1067,6 +1067,8 @@
   'baseline/test-osr': [SKIP],
 
   # BUG(v8:11826) Skipped until we remove flakes on NumFuzz.
+  'baseline/flush-only-baseline-code': [SKIP],
+  'baseline/flush-baseline-code': [SKIP],
   'regress/wasm/regress-1231950': [SKIP],
 
   # BUG(v8:12013) Skipped until we remove flakes on NumFuzz.