bg: Fix bg with single jpeg images (no edj)

When selecting a jpeg file directly as wallpaper, it will look
very blurry, clearly loaded as a low-resolution image and then
scaled up. Solution: don't load at size 64x64!

For @OnlyHuman, thanks for the report.

@fix

src/bin/e_bg.c

@@ -265,6 +265,7 @@ e_bg_zone_update(E_Zone *zone, E_Bg_Transition transition)
      {
         o = e_icon_add(e_comp->evas);
         e_icon_file_key_set(o, bgfile, NULL);
+        e_icon_scale_size_set(o, 0);
         e_icon_fill_inside_set(o, 0);
      }
    else