Fix iOS scrollEnabled hardcoded to true

[preis-lab]

Summary

Motivation

Fixes a bug where the scrollEnabled={false} prop would work correctly on the first render, but on subsequent renders, the scroll would always be enabled even when the prop remained false.

Root Cause

The prepareForRecycle method was hardcoding _scrollEnabled = YES; when the component was recycled. After recycling, if the prop value didn't change between renders, the updateProps method wouldn't update _scrollEnabled (because it only updates when the value changes), leaving it with the incorrect hardcoded value.

Solution

1. Removed hardcoded reset: Removed the hardcoded _scrollEnabled = YES; reset from the prepareForRecycle method (line 133).

2. Added initialization on first update: Added _scrollEnabled initialization in the updateProps method when _currentIndex == -1 (first update after recycling), ensuring the prop value is always applied correctly on initial mount and after component recycling, even if the prop value hasn't changed from the previous instance.

The changes ensure that:

• The value persists correctly across component recycling
• The prop value is always applied on first update (similar to how initialPage is handled)
• updateProps properly updates it when the prop value changes

Areas Impacted

• iOS implementation only (RNCPagerViewComponentView.mm)
• Component recycling behavior
• scrollEnabled prop handling
• Initial prop application on component mount/recycle

Test Plan

Prerequisites

• React Native app with react-native-pager-view installed
• iOS device or simulator

Steps to Reproduce (Before Fix)

1. Create a PagerView component with scrollEnabled={false} prop
2. Verify that scrolling is disabled on first render
3. Trigger a re-render (e.g., by updating state)
4. Observe that scrolling becomes enabled despite the prop being false

Verification (After Fix)

1. Set scrollEnabled={false} on a PagerView component
2. Verify that scrolling is disabled on first render
3. Trigger multiple re-renders
4. Confirm that scrolling remains disabled across all renders
5. Test component recycling scenarios (unmount/remount) to ensure prop is correctly applied

Compatibility

OS	Implemented
iOS	✅
Android	❌

Note: This fix is iOS-specific. Android implementation was not affected by this issue.

Checklist

• I have tested this on a device and a simulator
• I added the documentation in README.md (if needed)
• I updated the typed files (TS and Flow) (if applicable)