[PATCH v3 0/1] MR3959: uxtheme: Add ShouldSystemUseDarkMode.

[Helix Graziani (＠TornadoCookie)]

Used in some .NET apps for theming purposes.

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  v3: uxtheme: Add ShouldSystemUseDarkMode.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/3959