Always return simplified polygons

Clipper can handle complex input polygons but we will sometimes struggle
dealing with outputs from the inflate routine that have degenerate or
overlapping points.  Calling Simplify after the inflate keeps our
polygons easier to handle

Fixes https://gitlab.com/kicad/code/kicad/issues/11036

libs/kimath/src/geometry/shape_poly_set.cpp

@@ -717,8 +717,8 @@ void SHAPE_POLY_SET::BooleanIntersection( const SHAPE_POLY_SET& a, const SHAPE_P
 void SHAPE_POLY_SET::InflateWithLinkedHoles( int aFactor, int aCircleSegmentsCount,
                                              POLYGON_MODE aFastMode )
 {
-    Simplify( aFastMode );
     Inflate( aFactor, aCircleSegmentsCount );
+    Simplify( aFastMode );
     Fracture( aFastMode );
 }