Force light theme mode in AppTheme component

[saeeabhy]

Purpose

The user requested to change the application to use light theme mode, ensuring the interface displays consistently in light mode regardless of system preferences.

Code changes

• Added EnsureLightMode component that uses useColorScheme hook to programmatically force light mode
• Component uses useRef and useEffect to ensure mode is set to "light" only once on mount
• Integrated the new component into the AppTheme provider to enforce light mode across the application
• Cleaned up comments in theme configuration while maintaining existing light mode default setting

tag @builderio-bot for anything you want the bot to do

To clone this PR locally use the Github CLI with command gh pr checkout 25

🔗 Edit in Builder.io

👀 Preview Link