[compiler] Fix confusion about OSR BailoutId semantics.

test/mjsunit/regress/regress-5380.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --allow-natives-syntax --ignition-staging --turbo
 
-class Base {}
-class Subclass extends Base {
-  constructor() {
-    %DeoptimizeNow();
-    super();
+function f(do_osr) {
+  for (var i = 0; i < 3; ++i) {
+    if (i == 1 && do_osr) %OptimizeOsr();
   }
 }
-new Subclass();
-new Subclass();
-%OptimizeFunctionOnNextCall(Subclass);
-new Subclass();
+
+f(false);
+f(false);
+%BaselineFunctionOnNextCall(f);
+f(false);
+f(true);