and fix some other issues, to make the layouts more consistent. The aspect-ratios of the layouts, should now match the intended aspect-ratios (12:7 and 16:5), with 3 decimal-digits of precision; either exactly, or rounded to be a little more square, so that the entire height of the panel will be used. Adding 0.001 to `width` in the `default`-outlines of the layouts, would make the layouts a little wider than the intended aspect-ratio. Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/691>