fix: prevent programmatic scrolls from cancelling active touches on iOS

packages/react-native/React/Fabric/Mounting/ComponentViews/ScrollView/RCTScrollViewComponentView.mm

@@ -599,6 +599,7 @@ - (BOOL)_shouldDisableScrollInteraction
   metrics.containerSize = RCTSizeFromCGSize(_scrollView.bounds.size);
   metrics.zoomScale = _scrollView.zoomScale;
   metrics.timestamp = CACurrentMediaTime();
+  metrics.responderIgnoreScroll = !_isUserTriggeredScrolling;
 
   if (_layoutMetrics.layoutDirection == LayoutDirection::RightToLeft) {
     metrics.contentOffset.x = metrics.contentSize.width - metrics.containerSize.width - metrics.contentOffset.x;

packages/react-native/ReactCommon/react/renderer/components/scrollview/ScrollEvent.cpp

@@ -44,6 +44,7 @@ jsi::Value ScrollEvent::asJSIValue(jsi::Runtime& runtime) const {
 
   payload.setProperty(runtime, "zoomScale", zoomScale);
   payload.setProperty(runtime, "timestamp", timestamp * 1000);
+  payload.setProperty(runtime, "responderIgnoreScroll", responderIgnoreScroll);
 
   return payload;
 }
@@ -67,7 +68,8 @@ folly::dynamic ScrollEvent::asDynamic() const {
           "contentInset", std::move(contentInsetObj))(
           "contentSize", std::move(contentSizeObj))(
           "layoutMeasurement", std::move(containerSizeObj))(
-          "zoomScale", zoomScale)("timestamp", timestamp * 1000);
+          "zoomScale", zoomScale)("timestamp", timestamp * 1000)(
+          "responderIgnoreScroll", responderIgnoreScroll);
 
   return metrics;
 };

packages/react-native/ReactCommon/react/renderer/components/scrollview/ScrollEvent.h

@@ -21,6 +21,7 @@ struct ScrollEvent : public EventPayload {
   EdgeInsets contentInset;
   Size containerSize;
   Float zoomScale{};
+  bool responderIgnoreScroll{false};
 
   /*
    * The time in seconds when the touch occurred or when it was last mutated.

scripts/cxx-api/api-snapshots/ReactAndroidDebugCxx.api

@@ -7858,6 +7858,7 @@ struct facebook::react::ScrollEndDragEvent : public facebook::react::ScrollEvent
 
 struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Float timestamp;
   public facebook::react::Float zoomScale;

scripts/cxx-api/api-snapshots/ReactAndroidNewarchCxx.api

@@ -7619,6 +7619,7 @@ struct facebook::react::ScrollEndDragEvent : public facebook::react::ScrollEvent
 
 struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Float timestamp;
   public facebook::react::Float zoomScale;

scripts/cxx-api/api-snapshots/ReactAndroidReleaseCxx.api

@@ -7849,6 +7849,7 @@ struct facebook::react::ScrollEndDragEvent : public facebook::react::ScrollEvent
 
 struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Float timestamp;
   public facebook::react::Float zoomScale;

scripts/cxx-api/api-snapshots/ReactAppleDebugCxx.api

@@ -9891,6 +9891,7 @@ struct facebook::react::ScrollEndDragEvent : public facebook::react::ScrollEvent
 
 struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Float timestamp;
   public facebook::react::Float zoomScale;

scripts/cxx-api/api-snapshots/ReactAppleNewarchCxx.api

@@ -9704,6 +9704,7 @@ struct facebook::react::ScrollEndDragEvent : public facebook::react::ScrollEvent
 
 struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Float timestamp;
   public facebook::react::Float zoomScale;

scripts/cxx-api/api-snapshots/ReactAppleReleaseCxx.api

@@ -9882,6 +9882,7 @@ struct facebook::react::ScrollEndDragEvent : public facebook::react::ScrollEvent
 
 struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Float timestamp;
   public facebook::react::Float zoomScale;

scripts/cxx-api/api-snapshots/ReactCommonDebugCxx.api

@@ -6004,6 +6004,7 @@ struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public Float timestamp;
   public Float zoomScale;
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Point contentOffset;
   public facebook::react::Size containerSize;

scripts/cxx-api/api-snapshots/ReactCommonNewarchCxx.api

@@ -5829,6 +5829,7 @@ struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public Float timestamp;
   public Float zoomScale;
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Point contentOffset;
   public facebook::react::Size containerSize;

scripts/cxx-api/api-snapshots/ReactCommonReleaseCxx.api

@@ -5995,6 +5995,7 @@ struct facebook::react::ScrollEvent : public facebook::react::EventPayload {
   public Float timestamp;
   public Float zoomScale;
   public ScrollEvent() = default;
+  public bool responderIgnoreScroll;
   public facebook::react::EdgeInsets contentInset;
   public facebook::react::Point contentOffset;
   public facebook::react::Size containerSize;