[turbofan] Fix and reenable a test on no_harness configs

Bytecode flushing bit me again.

Bug: v8:9945, v8:9983
Change-Id: I9e4f9dd5e1793d60b24def447a8374e550fa248a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1924352
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65036}

test/mjsunit/compiler/regress-9945-2.js

@@ -15,6 +15,7 @@ function foo(x) { bar(x) }
 
 %PrepareFunctionForOptimization(foo);
 %PrepareFunctionForOptimization(bar);
+%PrepareFunctionForOptimization(mkbar);
 
 // Create map transitions such that a's final map is not stable.
 var dummy = [];

test/mjsunit/mjsunit.status

@@ -1040,8 +1040,6 @@
     # skip assertion tests since the stack trace is broken if mjsunit is
     # included in the snapshot
     'mjsunit-assertion-error': [SKIP],
-    # v8:9983
-    'compiler/regress-9945-2': [SKIP],
 }], # no_harness
 
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