The share-link query had no error or loading handling, so a failed read
collapsed to an empty list and rendered the "no active share links"
copy — on a clinical sharing surface a load failure was indistinguishable
from "you have shared nothing". Gate the list on the query state:
QueryErrorCard with retry on failure, a skeleton while loading, the lists
only once the data is in. The added test was watched fail first against
the old fall-through before this fix made it pass.
