[BigSmoKe07]

Goal of this PR

Make horizontal scrolling work in NUI. The horizontal wheel (tilt/thumb wheel) and horizontal trackpad gestures currently do nothing on NUI pages.

How is this PR achieving the goal

1. CefInput.cpp only forwarded WM_MOUSEWHEEL to CEF, so WM_MOUSEHWHEEL never reached the browser.
2. WM_MOUSEHWHEEL now takes the same SendMouseWheelEventNative path as WM_MOUSEWHEEL. CEF builds the event with ui::MouseWheelEvent from the native message, which already maps WM_MOUSEHWHEEL to a horizontal wheel event.

This PR applies to the following area(s)

FiveM, RedM

Successfully tested on

Game builds: b3889

Platforms: Windows

Checklist

• Code compiles and has been tested successfully.
• Code explains itself well and/or is documented.
• My commit message explains what the changes do and what they are for.
• No extra compilation warnings are added by these changes.

Fixes issues

fixes #3243