Install ConstructNonConstructable as construct stub for non-constructables.

test/webkit/class-syntax-call-expected.txt

Index: test/webkit/class-syntax-call-expected.txt
diff --git a/test/webkit/class-syntax-call-expected.txt b/test/webkit/class-syntax-call-expected.txt
index 79045ace956d49c59fa3f91df3f8bc02f838940c..00fbe1e92208701c60ba620d060b0d2668434f75 100644
--- a/test/webkit/class-syntax-call-expected.txt
+++ b/test/webkit/class-syntax-call-expected.txt
@@ -4,13 +4,13 @@ On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE
 
 
 PASS new A did not throw exception.
-PASS A() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS A() threw exception TypeError: Class constructor A cannot be invoked without 'new'.
 PASS new B did not throw exception.
-PASS B() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS B() threw exception TypeError: Class constructor B cannot be invoked without 'new'.
 PASS new (class { constructor() {} })() did not throw exception.
-PASS (class { constructor() {} })() threw exception TypeError: Class constructors cannot be invoked without 'new'.
-PASS new (class extends null { constructor() { super() } })() threw exception TypeError: function () {} is not a constructor.
-PASS (class extends null { constructor() { super() } })() threw exception TypeError: Class constructors cannot be invoked without 'new'.
+PASS (class { constructor() {} })() threw exception TypeError: Class constructor  cannot be invoked without 'new'.
+PASS new (class extends null { constructor() { super() } })() threw exception TypeError: super is not a constructor.
+PASS (class extends null { constructor() { super() } })() threw exception TypeError: Class constructor  cannot be invoked without 'new'.
 PASS successfullyParsed is true
 
 TEST COMPLETE