refactor: `onChangeText` from delegate

[kirillzyusko]

📜 Description

Consume onChangeText from delegate level.

💡 Motivation and Context

To make some of functionality properly working in reach RN ecosystem you had to apply patch to react-native-text-input-mask.

However it makes it complicated in terms of setup so I always thought on how to improve it. In https://github.com/kirillzyusko/react-native-keyboard-controller/pull/426 we started to inject our delegate to intercept some TextInput events. So now we can intercept necessary events without event-bus subscription (we can take them directly from the delegate).

In this PR I re-worked this part (removed TextInputObserver class) and started to use delegate for these purposes. Also I've discovered again that we may substitute back delegate and then substitute our own again (when user typed first letter) - it's not critical but it doesn't comply with keyboard-controller delegate paradigm - we should set delegate only once (on focus) and unset it on un-focus. So I also re-worked this part and now, when we're trying to delete our observers - we check, that we are actually move focused to another input.

📢 Changelog

Docs

• removed Known issues from useFocusedInputHandler hook;

E2E

• compare text between worklet and formatted;

iOS

• substitute delegate only one time on focus;
• handle text changes on delegate level;

🤔 How Has This Been Tested?

Tested on CI and iPhone 15 Pro manually.

📸 Screenshots (if appropriate):

No visual changes.

📝 Checklist

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

[github-actions[bot]]

📊 Package size report

Current size	Target Size	Difference
135975 bytes	136026 bytes	-51 bytes 📉

[github-actions[bot]]

PR Preview Action v1.4.7 :---: :rocket: Deployed preview to https://kirillzyusko.github.io/react-native-keyboard-controller/pr-preview/pr-435/ on branch gh-pages at 2024-05-10 09:09 UTC

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No change detected	-	May 10, 2024, 5:07 PM