`FindWindow()` as emitted in CsWin32 has `SetLastError = true` despite the docs saying "This function does not modify the last error value.".

[mjr4077au]

I don't know what the source of truth is here, but the discrepancy should be addressed one way or another. https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-findwindowa#remarks