TabView and shouldLoadComponent bounces between tabs

## 🐛 Bug Report

When using TabView and `shouldLoadComponent` is active, then having multiple child components will create a scenario where tabs do not switch properly when clicked on. The tabs bounce between various tabs.

Note, this bounce does not occur when `showLoadComponent` is not enabled. Also, swiping tab pane works fine.

## To Reproduce

Steps to reproduce the behavior:

See example.
1. Click on last tab
2. Click on first tab


## Expected behavior

Tab pane should switch without bouncing.

## Link to runnable example or repository (highly encouraged)

https://snack.expo.io/@romandc/994748

## UI Kitten and Eva version

| Package | Version |
| ----------- | ----------- |
| @eva-design/eva | ^2.0.0 |
| @ui-kitten/components | ^5.0.0 |

## Environment information

```bash

System:
OS: macOS 10.15.6
CPU: (4) x64 Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz
Binaries:
Node: 14.3.0 - /usr/local/bin/node
Yarn: 1.22.4 - /usr/local/bin/yarn
npm: 6.14.5 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 13.6, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2
IDEs:
Android Studio: 3.2 AI-181.5540.7.32.5056338
Xcode: 11.6/11E708 - /usr/bin/xcodebuild
npmPackages:
react: 16.11.0 => 16.11.0
react-native: https://github.com/expo/react-native/archive/sdk-38.0.0.tar.gz => 0.62.2
```