[relextm19]

Summary

Closes #169

Add onScroll event to EnrichedTextInput triggered when the content is scrolled. Payload is the same as in the React Native implementation

nativeEvent:{
  contentOffset: {
      x: number;
      y: number;
    };
}

Also adds a scrollEventThrottle prop defaulting to 16

Test Plan

Check the metro logs when running the mobile example or browser logs when running the web test. You can also write your own handler for onScroll and test it yourself

Screenshots / Videos

Compatibility

OS	Implemented
iOS	✅
Android	✅
Web	✅

Checklist

• E2E tests are passing
• Required E2E tests have been added (if applicable)

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🟡 Changes recommended

The new fullscreen row invalidates existing screenshot baselines, and scroll events have cross-platform throttling, unit, and precision errors.

6 open issues

• Regenerate fullscreen screenshot baselines after layout changes · New
• Use inclusive scroll throttle interval comparisons · New
• Convert native scroll pixels to density-independent coordinates · New
• Preserve fractional scroll coordinates in native event payloads · New
• Treat zero scroll throttle as no throttling on web · New
• Emit the latest scroll offset with trailing throttle delivery · New

_{Review effort: Balanced}