[Bug 54031] user32:msg - test_SendMessage_other_thread() broken by WM_WINDOWPOSCHANGING on Windows dual-monitor configs

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54031

--- Comment #2 from Esme Povirk  ---
This was NOT fixed by https://gitlab.winehq.org/wine/wine/-/merge_requests/3862

It's odd because these should be no-ops. Size and position are unchanged, along
with SWP_NOACTIVATE|SWP_NOZORDER. Documentation for SetWindowPos suggests
something else may have been changed which requires a SetWindowPos call, but it
advises SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED in that case.

I don't know what we could be doing to trigger this, but I also don't see this
particular message sequence happening in other circumstances, so I guess it
makes sense to add these as optional?