MvxTabBarViewController calls ViewDidDisappear method after ViewWillAppear in iOS 15
## 🐛 Bug Report

After app start, MvxTabBarViewController calls ViewDidDisappear method after ViewWillAppear. It causes unexpected behaviour as some elements do not work as expected, or do not respond.
This issue appears only on iOS 15 both for simulator and real device.

### Expected behavior

MvxTabBarViewController calls ViewDidAppear after ViewWillAppear method

### Reproduction steps
1. Install app on device with iOS 15.
2. Start app.

### Configuration

**Version:** 4.4.0

**Platform:**
- [13] Xcode
- [15] iOS
- [15.0.0.3] Xamarin.iOS
- [8.10.8.0] Visual Studio for Mac