Win32: fix position being changed on Resize while minimized

[MrJul]

What does the pull request do?

On Windows, this PR fixes the window's bounds being incorrectly changed if WindowImpl.Resize() gets called while the window is minimized (this can happen as a result of InvalidateMeasure()). This issue was introduced in #14470.

Two things were wrong in this case:

• The restore position was being set to the minimized position (-32000,-32000), causing Windows to always reposition the window at 0,0 instead when restoring it. This effectively always moved the window to the main screen.
• If the window was maximized before being minimized, the restore size was incorrectly set to the maximized size.

[avaloniaui-bot]

You can test this PR using the following package version. 11.3.999-cibuild0053423-alpha. (feed url: https://nuget-feed-all.avaloniaui.net/v3/index.json) [PRBUILDID]

[TomEdwardsEnscape]

Has #13300 (which the original changes fixed) been retested with these changes?

[MrJul]

Has #13300 (which the original changes fixed) been retested with these changes?

Absolutely! In fact the code from that issue was used as a basis for testing the changes.