Window is zoomed out from parent node when tree changes

[malfario]

Steps to reproduce:

1. Lay out three windows like this:

A
-- C
B

2. Run yabai -m window --toggle zoom-parent on A. It takes over B's space.
3. Make any change to the tree (ie. open a new window, increase/decrease A size, etc).

A is visually zoomed out, but the window's internal state is not updated:

$ yabai -m query --windows --space 1
{
        "id":9807,
        ...
        "zoom-parent":1,
        "zoom-fullscreen":0,
        "native-fullscreen":0
}

As a result, running yabai -m window --toggle zoom-parent again on A does nothing (visually) as it's really setting zoom-parent = 0, which is already set.

[koekeishiya]

The zoom-state should now properly reset when a window is removed or added.
I could not reproduce the cases where resizing the window caused a false positive for the zoom-state.

[malfario]

It's fixed, thanks a lot!