feat(android): auto-switch dark theme

[shovel-kun]

ReactNativeLegalActivity will automatically switch between dark/light theme based on Android device's theme. This feature is only available API 29+, on lower APIs, ReactNativeLegalActivity will remain light.

Perhaps launchLicenseListScreen function could accept a bool "isDark" argument to make this programmatic.

Tested API 29, 33, and 35.

See attached video for demonstration.

dark.webm

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[mateusz1913]

Thanks for the contribution!

Could I ask you on which devices (manufacturers) you tested your change?

I remember that some of the devices are problematic with dark mode (mainly some chinese e.g. Xiaomi) - I can test on one of older Xiaomis in next few days and will probably merge it

[shovel-kun]

@mateusz1913 Tested on physical Xiaomi device and Pixel (emulated).

[mateusz1913]

Great! I'll give it a shot tomorrow

[mateusz1913]

I gave it a shot and it's almost there 🎉, left 2 last comments

[shovel-kun]

Done and tested, switching themes works just as before.