when using  QSG_RHI_BACKEND=vulkan to run qtquic3d application, the mouse reaction area is a little below the actuall reaction area.

Reproduce steps:

export QSG_INFO=1
export QSG_RHI=1
export QSG_RHI_BACKEND=vulkan

run quick3d/antialiasing/antialiasing,

use the mouse to click the button, you will see the reactioned area is a little below the actual reaction area.

when QSG_RHI_BACKEND=opengl,  the mouse reaction is OK.