chore: upgrade to new Zone.js API v0.6.2

BREAKING CHANGE

Removed deprecated API from NgZone
- `NgZone.overrideOnTurnStart`
- `NgZone.overrideOnTurnDone`
- `NgZone.overrideOnEventDone`
- `NgZone.overrideOnErrorHandler`

Rename NgZone API
- `NgZone.onTurnStart` => `NgZone.onUnstable`
- `NgZone.onTurnDone` => `NgZone.onMicrotaskEmpty`
- `NgZone.onEventDone` => `NgZone.onStable`

Closes #7345

tools/broccoli/html-replace/SCRIPTS_benchmarks_external.html

@@ -1,5 +1,5 @@
 <script src="es6-shim.js"></script>
-<script src="zone-microtask.js"></script>
+<script src="zone.js"></script>
 <script src="long-stack-trace-zone.js"></script>
 <script src="angular.js"></script>
 <script src="url_params_to_form.js"></script>
@@ -10,5 +10,5 @@
     defaultJSExtensions: true
   });
   var filename = '@@PATH/@@FILENAME';
-  System.import(filename).then(function(m) { m.main(); }, console.error.bind(console));
+  System.import(filename).then(function(m) { m.main && m.main(); }, console.error.bind(console));
 </script>