fix: not detectable keyboard view on iOS

📜 Description

Handle corner case when keyboard view is not detectable on iOS.

💡 Motivation and Context

Sometimes app may have more than one UITextEffectsWindow and nested UIInputSetContainerView may not have a children (as on a screenshot):

In this case our previous code would return nil and full library functionality would be broken. From a screenshot above it's clear, that we should continue our search.

So to fix the problem I removed one break signal (loop over windows). Thus if we encounter empty UIInputSetContainerView we will continue search and will go to the next window (which will return a correct reference to the keyboard view).

Additionally I added return statement when we found a view (before 3 break statements served for this purpose, but since I removed one - the order is slightly broken, so to keep better backward compatibility and don't execute additional cycles if view was found - I used return statement there).

See the context when we may have more than one UITextEffectsWindow in https://github.com/kirillzyusko/react-native-keyboard-controller/issues/338#issuecomment-2163904827

📢 Changelog

iOS

removed break inside iteration over windows
added return to exit from for loops immediately
refactored code and removed variable creation

🤔 How Has This Been Tested?

Tested on iPhone 15 Pro (iOS 17.5).

📸 Screenshots (if appropriate):

Before	After

📝 Checklist

[x] CI successfully passed
[x] I added new mocks and corresponding unit-tests if library API was changed

kirillzyusko / react-native-keyboard-controller