With touchpad, I cannot scroll horizontally.

[SmartPolarBear]

Environment

Platform ServicePack Version      VersionString
-------- ----------- -------      -------------
 Win32NT             10.0.21370.0 Microsoft Windows NT 10.0.21370.0

lsb_release -r (debian):

Release:        11

pulseaudio.log

WSLg version: 1.0.19

Steps to reproduce

1. install Clion
2. Open enough tabs for scrolling, or run commands in the terminal , which produce long-enough output for both vertical and horizontal scroll.
3. scroll up and down with touch pad
4. scroll left and right with touch pad

Expected behavior

swipe up and down for vertically scrolling and left and right for horizontal scrolling

Actual behavior

In CLion and some other apps, I can only scroll horizontally in all windows and dialogs. For the tabs, I only can scroll it by swipe up and down, rather than left and right as normal

Logs : https://aka.ms/AAcei9s

[hideyukn88]

At RDP backend, it needs to map RDP's PTR_FLAGS_HWHEEL message to WL_POINTER_AXIS_HORIZONTAL_SCROLL.