[tests] Make assertOptimized()/assertUnoptimized() great again.

test/mjsunit/regress/regress-embedded-cons-string.js

Index: test/mjsunit/regress/regress-embedded-cons-string.js
diff --git a/test/mjsunit/regress/regress-embedded-cons-string.js b/test/mjsunit/regress/regress-embedded-cons-string.js
index 57028b0cef83d9949d97922b1ef8a55097639209..a93d463c74023c6bbd28c7e39ca11f0f98b943eb 100644
--- a/test/mjsunit/regress/regress-embedded-cons-string.js
+++ b/test/mjsunit/regress/regress-embedded-cons-string.js
@@ -28,12 +28,15 @@
 // Flags: --fold-constants --nodead-code-elimination
 // Flags: --expose-gc --allow-natives-syntax
 // Flags: --concurrent-recompilation --block-concurrent-recompilation
+// Flags: --no-always-opt
 
 if (!%IsConcurrentRecompilationSupported()) {
   print("Concurrent recompilation is disabled. Skipping this test.");
   quit();
 }
 
+assertFalse(isAlwaysOptimize());
+
 function test(fun) {
   fun();
   %BaselineFunctionOnNextCall(fun);