iOS: button's inferred accessibilityLabel includes children with accessibilityElementsHidden #4655

Description

On iOS, a gesture-handler button without an explicit accessibilityLabel builds its label from its subviews in RNGHRecursiveAccessibilityLabel (apple/RNGestureHandlerButton.mm, 3.3.0 lines 1536-1556, unchanged in 3.4.0). That function is described as "Vendored from RCTView.m", but it lacks the check React Native has in its own version:

// react-native 0.88, React/Fabric/Mounting/ComponentViews/View/RCTViewComponentView.mm:1506-1510
for (UIView *subview in view.subviews) {
  // Skip subviews that have accessibilityElementsHidden set to YES
  if (subview.accessibilityElementsHidden) {
    continue;
  }

So a child marked accessibilityElementsHidden is still read into the button's label. The common case is an icon font glyph (@expo/vector-icons renders a Text): the button's label then starts with a Private Use Area character, e.g. U+F01A5 (Material Community Icons crown) before "Get Pro", even though the icon has accessibilityElementsHidden. Inside a plain React Native View with accessible the same tree is labelled without the glyph.

Steps to reproduce

import { Pressable } from "react-native-gesture-handler";
import { Text } from "react-native";
import { MaterialCommunityIcons } from "@expo/vector-icons";

<Pressable accessibilityRole="button" onPress={() => {}}>
  <MaterialCommunityIcons name="crown" size={20} accessibilityElementsHidden importantForAccessibility="no" />
  <Text>Get Pro</Text>
</Pressable>

Read the accessibility tree (Accessibility Inspector or XCUITest): the button's label is "󰆥 Get Pro" instead of "Get Pro".

Suggested fix

Add the same if (subview.accessibilityElementsHidden) continue; at the top of the loop in RNGHRecursiveAccessibilityLabel.

Versions

react-native-gesture-handler 3.3.0 (also checked 3.4.0 source), react-native 0.88.0, Expo, New Architecture, iOS 26.
Observed on a device build (iPhone 16 Pro) in the accessibility tree; root cause read in source.