fixup! Initial support for dehydrated devices

crates/matrix-sdk-crypto/src/dehydrated_devices.rs

@@ -229,7 +229,7 @@ impl RehydratedDevice {
 
         // Let us first give the events to the rehydrated device, this will decrypt any
         // encrypted to-device events and fetch out the room keys.
-        let (_, changes) = self.rehydrated.receive_sync_changes_helper(sync_changes).await?;
+        let (_, changes) = self.rehydrated.preprocess_sync_changes(sync_changes).await?;
 
         // Now take the room keys and persist them in our original `OlmMachine`.
         let room_keys = &changes.inbound_group_sessions;