feat: only enable sexual content in the settings; not by default

by default sexual content might appear on the main page (if it is popular on tmdb right now). I would suggest that to enable sexual content one has to enable that explicitly in the settings. 

<img width="1405" height="1055" alt="Image" src="https://github.com/user-attachments/assets/ab2318ab-ee27-4932-82e0-6ec029716938" />