Godot 4B2: Alt+scroll integer zooming is broken a little, moves by 2 zoom increments instead of 1

[Proggle]

Godot version

v4.0.beta2.official [f8745f2]

System information

Windows 10

Issue description

It looks like something slightly broke with
#50490

In godot 3, this moves by steps of 1 zoom increment. So you zoom

25%/33%/50%/100%/200%/300%, et cetera

In godot 4 this appears to now move by steps of 2 zoom increments.
So the zoom levels are now
25%/50%/200%/400%
or
33%/100%/300%/500%

Steps to reproduce

Hold down alt, use the scroll wheel to zoom in or out.

Minimal reproduction project

No response