[runtime-test] EnsureFeedbackVector in Runtime_OptimizeOsr

With lazy feedback allocaiton functions may not have feedback vectors.
This causes crashes with clusterfuzz when it uses OptimizeOSR without
ensuring feedback vector. This cl ensures we have a feedback vector
before OSRing.

Bug: v8:8394
Change-Id: I5470c45cec2f6916d142f3bb4a385737083de25c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611809
Auto-Submit: Mythri Alle <mythria@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Mythri Alle <mythria@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61568}

src/runtime/runtime-test.cc

@@ -447,6 +447,7 @@ RUNTIME_FUNCTION(Runtime_OptimizeOsr) {
     function->ShortPrint();
     PrintF(" for non-concurrent optimization]\n");
   }
+  JSFunction::EnsureFeedbackVector(function);
   function->MarkForOptimization(ConcurrencyMode::kNotConcurrent);
 
   // Make the profiler arm all back edges in unoptimized code.