squash channel mentions in large teams with UntrustedTeamRole (#20260)
squash channel mentions in large teams with UntrustedTeamRole (#20260)

* add UntrustedTeamRole to NewMessagePayload

* use untrustedTeamRole to squash mentions

* cleanup avdl

* fix import

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