Disable WS_EX_COMPOSITED for wxGLCanvas and its parent windows

OpenGL window can't be used inside a composited window as its contents
is never drawn at all with some video cards/drivers in this case (at
least nVidia ones).

Closes #23112.

src/msw/glcanvas.cpp

@@ -753,6 +753,8 @@ bool wxGLCanvas::Create(wxWindow *parent,
     if ( !CreateWindow(parent, id, pos, size, style, name) )
         return false;
 
+    MSWDisableComposited();
+
     // Choose a matching pixel format.
     // Need a PIXELFORMATDESCRIPTOR for SetPixelFormat()
     PIXELFORMATDESCRIPTOR pfd;