tlf_handle_resolve: don't resolve implicit teams for chat resolves
tlf_handle_resolve: don't resolve implicit teams for chat resolves

Chat will never ask us for the handle of an implicit team.

Issue: KBFS-2598

keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client