Fixed key forwarding when user identity does not exist in store

Signed-off-by: Michael Hollister <[email protected]>

crates/matrix-sdk-crypto/src/olm/account.rs

@@ -1325,11 +1325,14 @@ impl Account {
             )
             .into())
         } else {
-            // If this event is an `m.room_key` event, defer the check for the
-            // Ed25519 key of the sender until we decrypt room events. This
-            // ensures that we receive the room key even if we don't have access
-            // to the device.
-            if !matches!(*event, AnyDecryptedOlmEvent::RoomKey(_)) {
+            // If this event is an `m.room_key` or `m.forwarded_room_key` event,
+            // defer the check for the Ed25519 key of the sender until we decrypt
+            // room events. This ensures that we receive the room key even if we
+            // don't have access to the device.
+            if !matches!(
+                *event,
+                AnyDecryptedOlmEvent::RoomKey(_) | AnyDecryptedOlmEvent::ForwardedRoomKey(_)
+            ) {
                 let Some(device) =
                     store.get_device_from_curve_key(event.sender(), sender_key).await?
                 else {