Built-in file picker doesn't fit on screen in portrait orientation

[Kiisu-Master]

Environment

• OS: Android 11 MIUI
• Device: Redmi
• App Version: Alpha 4

Description

The built-in file picker doesn't fit on screen in portrait orientation.

Steps to Reproduce

1. Disable native file picker in settings
2. Try to save or load a file
3. File picker will probably be half cut off on the right

Expected Behavior

Either make the file picker fit in a portrait orientation or automatically rotate the screen.