System and Application Theme

Is your feature request related to a problem? Please describe.
System theme and Enatega Application theme is contradicting with each other.

Describe the solution you'd like
When the user install the enatega application and uses it, the application should be able to pick whichever theme system is already using.

The issue names no files or tests. Start by locating the React Native application theme configuration and the entry point where the system color scheme is read. Done means the application consistently follows the device's selected system theme instead of conflicting with it.

Written by the indexing model from the issue text.