[TIMOB-14999] Only force frame if statusBar visibility changes

Fixes [TIMOB-14999](https://jira.appcelerator.org/browse/TIMOB-14999)
Fixes [TIMOB-14988](https://jira.appcelerator.org/browse/TIMOB-14988)

Also changes endpoint of NavWindow to Ti.UI.IOS.createNavigationWindow as requested.