[turbofan] Enable all escape analysis tests.

test/mjsunit/compiler/escape-analysis-7.js

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 // Flags: --allow-natives-syntax --experimental-turbo-escape
-//
 
 function f() {
   this.x=0;
 }
 
 function g(a) {
   "use strict";
   var o = new f();
   if (a) {
     o.x = 5;
   } else {
     o.x = 7;
   }
 
   return o.x;
 }
 
 assertEquals(5, g(true));
 assertEquals(7, g(false));
 %OptimizeFunctionOnNextCall(g);
 assertEquals(5, g(true));
 assertEquals(7, g(false));
 assertEquals(7, g());