This fixes various problems I've run into while trying to use Fusion 360 in wine.
- stacking issues in unmanaged mode
- I also attempted to apply the same fix for managed mode, but it looks difficult to do this in a way that plays well with window managers; I think it's best left up to them to keep override_redirect windows at the top of the stack)
- when the window manager sets our state to withdrawn, tell the window that it's been minimized, since the semantics are very similar
- the last one is a hack because I don't really know what to do about it, when clicking on the floating popups, they gain focus, which causes wine to incorrectly make them managed and that breaks everything
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v2: winex11: don't make a window managed because it's active
winex11: pass ICCCM withdrawn state as minimized
winex11: restack a window's owned popups above it
https://gitlab.winehq.org/wine/wine/-/merge_requests/2343