[Bug 55771] uxtheme:system - test_ShouldSystemUseDarkMode() fails on Windows 7 to 10 1909

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55771

--- Comment #2 from Helix Graziani  ---
According to online
sources(https://learn.microsoft.com/en-us/answers/questions/715081/how-to-detect-win...),
this function was introduced in Windows 10 1903.
However, in the test results it shows that the function must've gone through a
change in between 1903 and 22H2.

So:
Before 1903, we have no idea what this function is or what it does, so skip.
On 1909, it returns 1 instead of 0 (dark mode instead of light, maybe the
default is dark mode in 1909?)
The testbot doesn't have a configuration for windows 1903, so we can assume the
test results are the same as 1909.
From 2004-22H2 everything is ok.