Fix scaling error of SVGs

[semiversus]

This small pull-requests solves a problem when SVG are drawn with DPI scaling factor != 1.0 and tiny-skia. The problem is described in #2825.

In the draw_image function of Engine (in tiny_skia/src/engine.rs) the variable pyhsical_bounds is used, but it should be *bounds (same as in the Image:Raster arm).

                self.vector_pipeline.draw(
                    &svg.handle,
                    svg.color,
                    physical_bounds,  // <- *bounds is expected
                    svg.opacity,
                    _pixels,
                    transform,
                    clip_mask,
                );

[semiversus]

Closed in favor of #2954