recentmodel: emit dataChanged when Call::changed
recentmodel: emit dataChanged when Call::changed

So that the call nodes in the RecentModel are updated.
dataChanged() is also emitted on the parent node because
in the PeopleProxy the first call info is forwarded to
the parent, since the first call is hidden if its the only
one.

Issue: #81198
Change-Id: I712b948ded4d9ef80921cb7b68271eebd28ba58b

savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc