fix: `KeyboardAvoidingView` is not reacting on keyboard movements if was mounted when keyboard is open

[kirillzyusko]

📜 Description

Update initialFrame on first render.

💡 Motivation and Context

The problem with the old condition is the case when screen that uses KeyboardAvoidingView is pushed/gets mounted and the keyboard is already in open state. In this case we don't update initialFrame (because we update it only when onLayout is fired and keyboard is closed - to avoid concurrent re-calculations) and it remains always null. As a result relativeKeyboardHeight returns 0 and we interpolate from [0, 1] to [0, 0], so our padding will be always 0.

In this PR I'm fixing this problem by adding initialFrame.value === null condition. Such check will be executed only on initial mount. And since relativeKeyboardHeight returns 0 when initialFrame.value === null -> we will not have concurrent calculations that can interfere with each other.

📢 Changelog

JS

• added || initialFrame.value === null check in onLayout callback

🤔 How Has This Been Tested?

Tested manually on iPhone 15 Pro (iOS 17.2, simulator).

📸 Screenshots (if appropriate):

Before	After

📝 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
129630 bytes	129578 bytes	52 bytes 📈