measurement y values for nodes used in stickyHeaderIndices do not match it's sticky positioning

Description

When a node which is included in a list that specifies it in it's stickyHeaderIndices is measured via it's ref using measure or measureInWindow, the y and pageY values reflect the node's original coordinates and do not account for it's sticky positioning.

Steps to reproduce

1. Scroll a list until the node(s) in stickyHeaderIndices become sticky
2. Measure the sticky node via it's ref

Expected:

Coordinates reflect it's current, sticky position on the screen or in the viewport, like how it works on the legacy architecture.

Actual:

Coordinates reflect it's original positioning, not accounting for it's sticky position, so once the element becomes sticky due to scroll the y values will be negative.

React Native Version

0.79.2

Affected Platforms

Runtime - iOS

Areas

Other (please specify), Fabric - The New Renderer

Output of npx @react-native-community/cli info

System:
  OS: macOS 14.6.1
  CPU: (12) arm64 Apple M2 Pro
  Memory: 154.50 MB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.19.1
    path: /usr/local/bin/node
  Yarn:
    version: 1.22.19
    path: ~/.yarn/bin/yarn
  npm:
    version: 10.8.2
    path: /usr/local/bin/npm
  Watchman:
    version: 2024.09.09.00
    path: /usr/local/bin/watchman
Managers:
  CocoaPods:
    version: 1.11.3
    path: /Users/adamhari/.rvm/gems/ruby-2.7.6/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2023.1 AI-231.9392.1.2311.11330709
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.10
    path: /usr/bin/javac
  Ruby:
    version: 2.7.6
    path: /Users/adamhari/.rvm/rubies/ruby-2.7.6/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.2
    wanted: 0.79.2
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: Not found
  newArchEnabled: Not found
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found

Stacktrace or Logs

n/a

MANDATORY Reproducer

https://snack.expo.dev/@adamhari-kashoo/measure-y-value-incorrect-for-element-in-stickyheaderindices

Screenshots and Videos

https://github.com/user-attachments/assets/cec10b97-ac2e-4931-b920-0fe045725f38

Bắt đầu bằng cách chạy trình tái hiện Snack bắt buộc trên iOS và so sánh các phép đo trước và sau khi một node trong stickyHeaderIndices trở thành sticky. Điều tra hành vi đo lường của Fabric đối với measure và measureInWindow, sử dụng kết quả của kiến trúc legacy làm tham chiếu mong đợi. Hoàn tất khi các tọa độ y và pageY được báo cáo phản ánh vị trí sticky hiện tại của node thay vì vị trí ban đầu của nó.