fix: show untyped CV items in both work and personal views

Items without a type field (existing data before type feature was added)
were only appearing in "personal" filtered views. Since the /cv/ page uses
work-only variants, all existing untyped data was hidden. Changed filtering
so untyped items appear in both work and personal views.

Also guard cv.skills dictsort in cv.njk against undefined.

cv.njk

@@ -10,7 +10,7 @@ pagefindIgnore: true
 
 {% set hasCvData = (cv.experience and cv.experience.length) or
       (cv.projects and cv.projects.length) or
-      (cv.skills and (cv.skills | dictsort | length)) %}
+      (cv.skills and ((cv.skills or {}) | dictsort | length)) %}
 
 {% if hasCvData %}