Post-Lost OT processing may unstub stubs or synchronize incorrectly

After a lost OT Root from the server, all client replicates must be updated,
since synchronization with the server has been lost.

The code that performed this collected replicates in a Dictionary, which
required sending #hash to the entry, as well as risking incorrect synchronization
if replicates compared equal.

Workaround:

none/not applicable