Snapshot garbage collection should not run when the keys are moved from a deleted snapshot to the next snapshot in the chain

There is a race condition where entries in the rename tables could be inconsistent state when moving keys from a deleted snapshot to the next snapshot in chain. If the garbage collection runs on the next snapshot then this could lead to incorrect deletion. This would happen since data rename entries could be in an inconsistent state. Garbage Collection should wait for the snapshot purge to happen if the previous snapshot in chain is in deleted state.