(RN 79.5) TextInput onContentSizeChange is not triggered on iOS

Description

I noticed that after updating to 0.79.5, TextInput.onContentSizeChange is no longer triggered even if the multiline is set to true and input does growth properly. It is only triggered once, when the component mounts.

Steps to reproduce

1. Add any TextInput component with onContentSizeChange prop, eg. onContentSizeChange={() => Alert.alert('hello')}
2. Render the app with iOS-simulator
3. Press enter on input, nothing happens.

React Native Version

0.79.5

Affected Platforms

Runtime - iOS

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

info Fetching system and libraries information...
System:
  OS: macOS 14.6.1
  CPU: (8) arm64 Apple M1
  Memory: 150.19 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.18.1
    path: /usr/local/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.npm-global/bin/yarn
  npm:
    version: 10.8.2
    path: /usr/local/bin/npm
  Watchman:
    version: 2025.04.14.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/lib/ruby/gems/3.0.0/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: 2024.1 AI-241.18034.62.2411.12071903
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 22.0.1
    path: /usr/bin/javac
  Ruby:
    version: 3.4.2
    path: /opt/homebrew/opt/ruby/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.79.5
    wanted: 0.79.5
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: Not found
  newArchEnabled: Not found
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found

info React Native v0.80.2 is now available (your project is running on v0.79.5).
info Changelog: https://github.com/facebook/react-native/releases/tag/v0.80.2
info Diff: https://react-native-community.github.io/upgrade-helper/?from=0.79.5&to=0.80.2
info For more info, check out "https://reactnative.dev/docs/upgrading?os=macos".

Stacktrace or Logs

None

MANDATORY Reproducer

https://snack.expo.dev/@njaah/textinput-issue?platform=ios

Screenshots and Videos

No response

首先在 iOS 模拟器上使用 React Native 0.79.5，从必需的 Snack 复现示例和 TextInput.onContentSizeChange 入口点开始。跟踪多行输入框在按下 Enter 后逐渐增大时的 iOS 行为；完成标准是 callback 会在后续内容大小变化时触发，而不仅仅是在 mount 时触发。