Error exporting apk in Godot Mobile

### Tested versions

- Reproducible in godot 4.4.dev 3.

### System information

Godot v4.4.dev3 - Android 11 - Single-window, 1 monitor - Vulkan (Mobile) - integrated Adreno (TM) 610 - (8 threads)

### Issue description

- The apk export gives an error when placed outside the folder where the godot projects are located, I tested it in two download and document folders, both of which give the same error.

### Steps to reproduce

- Open a project in Godot mobile 4.4.dev.3, press export, and go to the download folder, try to export, it gives an error.

- Now try exporting again but this time in the folder where the project is located, you noticed that there is no error.

- I don't know if it's because of Android 11. If so, it's better to put a message warning about Android's limitations.

### Minimal reproduction project (MRP)

- N/D