fix: remove keyboard controller remnants

[isekovanic]

🎯 Goal

This PR removes remnants of react-native-keyboard-controller which we initially wanted to add to the SDK in a first line support fashion. However, since it was a bit rushed it was not up to our standards in terms of quality and so we decided to remove it (hence why it isn't mentioned in the docs). This was due to the complexity of the integration within our SDK specifically, not the library itself (the library's really really great and we actively recommend using it if your project allows it).

However, some remnants of it spilled over in a way that it forces react-native-keyboard-controller to be used if it's installed. This is obviously not ideal as a lot of the issues did not get polished out and so integrations that previously used react-native-keyboard-controller elsewhere have a buggy handling of pretty much everything keyboard related.

With this change this should be resolved.

🛠 Implementation details

🎨 UI Changes

iOS

Before	After

Android

Before	After

🧪 Testing

☑️ Checklist

• I have signed the Stream CLA (required)
• PR targets the develop branch
• Documentation is updated
• New code is tested in main example apps, including all possible scenarios
  • SampleApp iOS and Android
  • Expo iOS and Android

[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
js_bundle_size	368 KB	368 KB	-870 B	🚀