Steam Controller Trackpads cannot send "Mouse Cursor Up" on ScummVM core

[notNSANE]

Simply, the Steam Controller trackpads (using the xinput or sdl driver along with "RetroPad") cannot move the cursor up. Every single other mouse emulation command works, but it's not possible to move the cursor up no matter what.

The Left Analog Stick works fine.

Mind that Steam Input cannot be disabled on Steam. This issue only happens with the Steam Controller.

1. Plug or turn on the Steam Controller
2. Make sure the Steam Controller is using an Xinput layout
3. Launch RetroArch on Steam
4. Load ScummVM
5. Make sure to map either the Left or Right Trackpads to emulate a mouse cursor
6. Launch a game that uses mouse
7. Try to move the mouse cursor up

Using 7310...2.10.0git ScummVM version (Steam version) on Windows 24H2, but this issue has happened the entire 2024 year at least.

• Affected Input drivers: xinput, sdl2

With SDL, the issue is reversed: cursor can go up, but cannot go down. It's crazy.

[notNSANE]

Also, this issue might affect the Steam Deck too since they share the same Steam Input stuff on Steam, so a bunch of people might have this issue.

For reference, we use the Right Trackpad for emulating the mouse cursor on Windows Desktop as default, so it's only natural we're using it to emulate a cursor here. It's a day and night difference than the Left Analog Stick.