fixup! Add a message id to our encrypted to-device events

Author: poljar

crates/matrix-sdk-crypto/src/identities/device.rs

@@ -450,7 +450,11 @@ impl Device {
     ) -> OlmResult<(Session, Raw<ToDeviceEncryptedEventContent>)> {
         #[cfg(feature = "message-ids")]
         let message_id = {
+            #[cfg(not(target_arch = "wasm32"))]
             let id = ulid::Ulid::new().to_string();
+            #[cfg(target_arch = "wasm32")]
+            let id = ruma::TransactionId::new().to_string();
+
             tracing::Span::current().record("message_id", &id);
             Some(id)
         };