bitbake-layers: ensure non-extended recipe name is preferred

bitbake-layers: ensure non-extended recipe name is preferred

In show-recipes and show-overlayed, we only list one variant of each
recipe where multiple exist, therefore we should show the main one (e.g.
in OpenEmbedded, we now show openssl and not nativesdk-openssl which
would otherwise sort first.)

Fixes [YOCTO #7514].

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>