Section sticky header in wrong place after list header change until scroll

Description

I migrating to the New Architecture.
I have component which worked fine 7 years on the "old architecture".
It uses Animated.SectionList and can hide content in ListHeaderComponent.
In the New architecture on ListHeaderComponent change: section header (renderSectionHeader) goes to the wrong place until manually scroll a little.

Steps to reproduce

1. Clone and run https://github.com/Bardiamist/diff/tree/section-list-header

2. Scroll util red header will stick

3. Press Hide top content after 1 sec button

4. Wait 1 second
   Expected result: red header should be in same place

5. Scroll a little

6. Press Show content after 1 sec button

7. Wait 1 second
   Expected result: red header should be in same place

React Native Version

0.78.1

Affected Platforms

Runtime - iOS

Areas

Fabric - The New Renderer

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

System:
  OS: macOS 15.3.2
  CPU: (10) arm64 Apple M1 Max
  Memory: 11.71 GB / 64.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 23.10.0
    path: /opt/homebrew/bin/node
  Yarn:
    version: 1.22.22
    path: /opt/homebrew/bin/yarn
  npm:
    version: 10.9.2
    path: /opt/homebrew/bin/npm
  Watchman:
    version: 2025.03.10.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.12.1
    path: /usr/local/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: 2024.3 AI-243.22562.218.2431.13114758
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.14
    path: /usr/bin/javac
  Ruby:
    version: 2.6.10
    path: /Users/bardiamist/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: 15.0.1
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.78.1
    wanted: 0.78.1
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Stacktrace or Logs

No crash

Reproducer

https://github.com/Bardiamist/diff/tree/section-list-header

Screenshots and Videos

Works with problem on the New Architecture:

https://github.com/user-attachments/assets/ceef7a7d-3e8e-49c9-83ba-2c402c8ce269

Worked as expected on the "old architecture":

https://github.com/user-attachments/assets/ea9ac31c-c424-494c-9a89-1e09b08b220c

Run the linked section-list-header reproducer on iOS with the New Architecture enabled, then inspect Animated.SectionList and renderSectionHeader behavior when ListHeaderComponent content is hidden or shown. Done means the red section header stays in the same position after both changes without requiring a manual scroll.