Description

Forcing DefaultTheme on react-navigation should applied light theme on native component even if system is in dark mode.

On iOS, if we have DefaultTheme we can see that native back button, bottom bar from https://github.com/callstackincubator/react-native-bottom-tabs are not applying the light theme but system theme instead

Home back button style is updated with no reason:
https://github.com/user-attachments/assets/7fa97532-c04e-4a1c-9ca5-e8ffa4df450c

Steps to reproduce

1. Xcode 26 & iOS 26 (with dark theme on system)
2. Launch app from the repo
3. Open profile
4. See that the back button does not have the right theme

Snack or a link to a repository

https://github.com/huextrat/repro-screens-ios

Screens version

4.15.2

React Native version

0.79.6

Platforms

iOS

JavaScript runtime

None

Workflow

None

Architecture

None

Build type

None

Device

None

Device model

No response

Acknowledgements

Yes