fix #29753, use ES5 constructors for ddc

pkg/dev_compiler/test/codegen_expected/node_modules.js

Index: pkg/dev_compiler/test/codegen_expected/node_modules.js
diff --git a/pkg/dev_compiler/test/codegen_expected/node_modules.js b/pkg/dev_compiler/test/codegen_expected/node_modules.js
index 67198444351f5c57efa258818df348d273314a54..bc44cde4575402b972bae19aee5581a845af3f5c 100644
--- a/pkg/dev_compiler/test/codegen_expected/node_modules.js
+++ b/pkg/dev_compiler/test/codegen_expected/node_modules.js
@@ -10,15 +10,23 @@ let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.fnType(dart.dynamic
 let VoidToString = () => (VoidToString = dart.constFn(dart.fnType(core.String, [])))();
 node_modules.Callback = dart.typedef('Callback', () => dart.fnTypeFuzzy(dart.void, [], {i: core.int}));
 node_modules.A = class A extends core.Object {};
+(node_modules.A.new = function() {
+}).prototype = node_modules.A.prototype;
 node_modules._A = class _A extends core.Object {};
+(node_modules._A.new = function() {
+}).prototype = node_modules._A.prototype;
 node_modules.B$ = dart.generic(T => {
   class B extends core.Object {}
+  (B.new = function() {
+  }).prototype = B.prototype;
   dart.addTypeTests(B);
   return B;
 });
 node_modules.B = B();
 node_modules._B$ = dart.generic(T => {
   class _B extends core.Object {}
+  (_B.new = function() {
+  }).prototype = _B.prototype;
   dart.addTypeTests(_B);
   return _B;
 });