d3d9 does not do instancing for not-indexed draw calls on Windows
Original issue in DXVK repo: https://github.com/doitsujin/dxvk/issues/3157
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54570
-- v6: d3d9: Always draw only a single instance for non-indexed draws. d3d9/tests: Add test for not-indexed instancing drawing