Make Windows stack walking test use runtime-compiled code

I happened to notice while stepping through the StackUnwindingWin64 test
that it never actually encounters a runtime-compiled function despite
using %OptimizeFunctionOnNextCall. V8 compiles the function on the
subsequent call as requested, but the compiled function isn't very good
because there was no feedback data, and it immediately deopts. To fix,
we can call the function once between %PrepareFunctionForOptimization
and %OptimizeFunctionOnNextCall.

Change-Id: Icb25f16d43a60c36a1f85d15e2ce4535e08d1076
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2472780Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#70633}

test/cctest/test-stack-unwinding-win64.cc

@@ -101,7 +101,7 @@ UNINITIALIZED_TEST(StackUnwindingWin64) {
     v8::Local<v8::Function> function = v8::Local<v8::Function>::Cast(
         env->Global()->Get(env.local(), v8_str("start")).ToLocalChecked());
 
-    CompileRun("%OptimizeFunctionOnNextCall(start);");
+    CompileRun("start(1); %OptimizeFunctionOnNextCall(start);");
 
     int32_t repeat_count = 100;
     v8::Local<v8::Value> args[] = {v8::Integer::New(isolate, repeat_count)};