(Android 9) Flatlist header shows up underneath items if items have elevation: 1 or higher; can't be fixed with zindex.

Description

Flatlist ListHeaderComponent together with stickyHeaderIndices={[0]} shows up under items when scrolling, if items have elevation 1 or higher. Seems to only show up on my older device (Android 9), I've tried to fix this with both zIndex and elevation on the header component (also with ListHeaderComponentStyle) but nothing changes.

Steps to reproduce

1. open the provided snack with an older device (Android 9), I can't test Android 10 at the moment but when using Android 11 or higher the issue doesn't show up.
2. scroll the FlatList
3. observe header component

React Native Version

0.76.6

Affected Platforms

Runtime - Android

Output of npx react-native info

System:
  OS: Windows 10
  Memory: 4.22 GB / 15.9 GB
Binaries:
  Node:
    version: 20.11.0
    path: ~\node_modules\.bin\node.CMD
  Yarn: Not Found
  npm:
    version: 11.0.0
    path: ~\project\node_modules\.bin\npm.CMD
  Watchman: Not Found
SDKs:
  Android SDK:
    API Levels:
      - "33"
      - "35"
    Build Tools:
      - 33.0.1
      - 34.0.0
      - 35.0.0
    System Images: Not Found
    Android NDK: Not Found
  Windows SDK: Not Found
IDEs:
  Android Studio: AI-241.18034.62.2412.12266719
  Visual Studio:
    - 17.9.34728.123 (Visual Studio Community 2022)
Languages:
  Java: 17.0.13
  Ruby: Not Found
npmPackages:
  "@react-native-community/cli":
    installed: 15.1.3
    wanted: ^15.1.3
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.76.6
    wanted: 0.76.6
  react-native-windows: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: Not found
  newArchEnabled: Not found
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found

Stacktrace or Logs

no stacktrace.

Reproducer

https://snack.expo.dev/@0xirakli/lonely-blue-cake?platform=android

Screenshots and Videos

まず、FlatList、stickyHeaderIndices={[0]}、および elevation を持つ項目を使用して、React Native 0.76.6 の Android 9 でリンクされた Snack を再現し、Android 11 以降と動作を比較します。sticky header と item elevation の Android における処理を追跡し、影響を受ける Android バージョンでスクロール中も header が elevation のある項目より上に留まれば、問題の対応完了とみなします。