Kirill Chibisov 74fcf7f9c0 On Windows, fix RedrawRequested delivery ...

When calling `Window::request_redraw` from the `RedrawRequested`
handler the `RedrawWindow` won't result in `WM_PAINT` being delivered
due since user callback is run before `DefWindowProcW` is called.

Track whether the user called `Window::request_redraw` and ask for
`RedrawWindow` after running the said function during `WM_PAINT`
handling.

Fixes #3150.

2023-10-21 11:40:41 +04:00

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