cr_chains: changeOriginal shouldn't put into createdOriginals
cr_chains: changeOriginal shouldn't put into createdOriginals

Since the new original actually came from some other branch.

Issue: KBFS-2076

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