Respect DXF origin on graphics import if possible

We only need to adjust the DXF import box location if the graphics
imported do not fit on our drawing area

Fixes https://gitlab.com/kicad/code/kicad/-/issues/18523

common/import_gfx/graphics_importer_buffer.cpp

@@ -128,16 +128,19 @@ void GRAPHICS_IMPORTER_BUFFER::ImportTo( GRAPHICS_IMPORTER& aImporter )
     // in the KiCad drawing area
     else if( aImporter.GetImportOffsetMM() == VECTOR2D( 0, 0 ) )
     {
-        VECTOR2D offset = boundingBox.GetOrigin();
-        aImporter.SetImportOffsetMM( -offset );
+        if( boundingBox.GetRight() > std::numeric_limits<int>::max()
+            || boundingBox.GetBottom() > std::numeric_limits<int>::max()
+            || boundingBox.GetLeft() < std::numeric_limits<int>::min()
+            || boundingBox.GetTop() < std::numeric_limits<int>::min() )
+        {
+            VECTOR2D offset = boundingBox.GetOrigin();
+            aImporter.SetImportOffsetMM( -offset );
+        }
     }
     else
     {
-        VECTOR2D bbox_origin = boundingBox.GetOrigin();
-        aImporter.SetImportOffsetMM( -bbox_origin + aImporter.GetImportOffsetMM() );
-
-        double total_scale_x = aImporter.GetScale().x * aImporter.GetMillimeterToIuFactor();
-        double total_scale_y = aImporter.GetScale().y * aImporter.GetMillimeterToIuFactor();
+        double   total_scale_x = aImporter.GetScale().x * aImporter.GetMillimeterToIuFactor();
+        double   total_scale_y = aImporter.GetScale().y * aImporter.GetMillimeterToIuFactor();
 
         double max_offset_x =
                 ( aImporter.GetImportOffsetMM().x + boundingBox.GetRight() ) * total_scale_x;