[PATCH 0/2] MR7142: win32u: Reset surface clip region if it matches the visible rect.

[Rémi Bernon]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57665

With an empty clipping region, when the window is being shown, the Expose event we receive is ignored by `expose_window_surface`, assuming there's no redraw necessary. If a clipping region is set, we call `NtUserRedrawWindow` with `RDW_ERASE` which clears the window.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/7142