Fix Text component padding touch area on iOS (Fabric)

[ANTI-Tony]

Summary

Fixes #54056

When a Text component has padding, onPress events were not triggered when clicking in the padding area on iOS with the new architecture (Fabric) enabled.

Changes

Modified getEventEmitterWithAttributeString in RCTTextLayoutManager.mm to fix overly strict hit testing logic.

The previous implementation rejected touch points where fraction == 0 or fraction == 1, which occurs when clicking in padding areas. This fix removes the fraction check and allows any valid character index within the text storage to return an event emitter.

Test Plan

1. Create a Text component with padding and onPress handler
2. Click on the padding area (not the text itself)
3. Verify that onPress is triggered

Before: Only text content was clickable
After: Both padding and text content are clickable

Platforms

• iOS (Fabric)
• Android (not affected by this issue)

Changelog

[IOS][FIXED] - Fix Text component padding touch area on iOS with Fabric enabled

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[javache]

Could you add a test-case to RNTester to demonstrate this issue?

Could you also test what happens when the text view is flattened in a much bigger container. Are we definitely not receiving touches outside of the textview's bounds?