teams: ignore some errors in `handleChangeSingle`
teams: ignore some errors in `handleChangeSingle`

Suggested by mlsteele.

Issue: #18983

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