iOS cookies not persistent after app exit and restart unlike Android

# Bug Report

## Problem
In iOS cookies are not persistent once app is exited and restarted. This creates problem with hosted web app saving cookies or local storage.

On Android it works

### What is expected to happen?
It should save cookies and local storage on IOS

### What does actually happen?
It doesn't save cookies and local storage.

## Information

### Command or Code

var ref = cordova.InAppBrowser.open('http://www.syncaridebeta.com', '_blank', 'location=no,toolbar=no,usewkwebview=yes,clearcache=no,clearsessioncache=no,cleardata=no,disallowoverscroll=yes');

### Environment, Platform, Device

### Version information

## Checklist

- [x] I searched for existing GitHub issues
- [x] I updated all Cordova tooling to most recent version
- [x] I included all the necessary information above

Start by reproducing the issue on iOS with the shown cordova.InAppBrowser.open call, then compare cookie and local-storage behavior before and after app restart with Android. Done means the hosted web app retains both cookies and local storage after an iOS exit and relaunch; the payload does not identify source files or tests.

Written by the indexing model from the issue text.