HFE - Fix key ref by the hash on RENAME/MOVE/SWAPDB/RESTORE (#13539)
If the hash previously had HFEs (hash-fields with expiration) but later no longer does, the key ref in the hash might become outdated after a MOVE, COPY, RENAME or RESTORE operation. These commands maintain the key ref only if HFEs are present. That is, we can only be sure that key ref is valid as long as the hash has HFEs.
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