Add allowsKeyboardScrolling prop to ScrollView for scrolling its content with hardware keyboard input

[ArturKalach]

Summary:

Apple introduced allowsKeyboardScrolling at WWDC 2023 (session 10281) — a UIScrollView property that enables scroll views to respond to Page Up, Page Down, Home, and End keys on iPad and iPhone.

React Native currently has no support for this property, leaving users on iOS 17+ without the expected keyboard navigation behavior. This was reported by @filip-angelov in #52833.

This PR enables allowsKeyboardScrolling by default for devices running iOS 17.0+, bringing React Native scroll behavior in line with native UIKit defaults and improving the experience for users with external keyboards.

Changelog:

[IOS] [ADDED] - Add allowsKeyboardScrolling prop to ScrollView to allows scrolling its content with hardware keyboard input

Test Plan:

1. Enable Full Keyboard Access on the device and connect an external keyboard.
2. Open a screen with a ScrollView on a device running iOS 17 or later.
3. Verify scrolling works with the following keys:
   • Home / End — scrolls to top / bottom (fn+left/right)
   • Page Up / Page Down — scrolls by page (fn+up/down)
4. Set allowsKeyboardScrolling={false} and verify that keyboard scrolling is disabled.

disabled	enabled
https://github.com/user-attachments/assets/0d44a665-408c-4dbd-9a8d-818f71a0d9c9	https://github.com/user-attachments/assets/a253d277-9a5e-4403-929b-f477494d74cd

[github-actions]

Warning

JavaScript API change detected

This PR commits an update to ReactNativeApi.d.ts, indicating a change to React Native's public JavaScript API.

• Please include a clear changelog message.
• This change will be subject to additional review.

This change was flagged as: POTENTIALLY_BREAKING