message: Fix SidebarSeparator rendering in dark mode
diff: @@ -80,9 +80,18 @@ private:
  {
  wxPaintDC dc(this);
  auto w = dc.GetSize().x;
  + if (ColorScheme::GetWindowMode(this) == ColorScheme::Light)
  + {
  dc.GradientFillLinear(wxRect(0,0,PX(20),PX(1)), m_sides, m_center);
  dc.GradientFillLinear(wxRect(PX(20),0,w,PX(1)), m_center, m_sides);
  }
  + else
  + {
  + dc.SetBrush(m_center);
  + dc.SetPen(m_center);
  + dc.DrawRectangle(PX(2), 0, w - PX(4), PX(1));
  + }
  + }
  wxColour m_sides, m_center;
  };
  