When external keyboard is plugged in (Android), Touch input is detected as mouse.

### Tested versions

- Reproducible in 4.2 Stable.

### System information

Android one-click deploy, Godot 4.2 stable

### Issue description

When an external keyboard is plugged into an android, touch is detected as mouse.

### Steps to reproduce

Plug in an external keyboard on Android and open a Godot application

### Minimal reproduction project (MRP)

N/A

Start by reproducing the issue in a Godot 4.2 Android application with an external keyboard connected, following the steps in the report. Trace Android input handling to determine why touch input is classified as mouse input, then verify that touch remains touch input while the keyboard is connected.

Written by the indexing model from the issue text.