fixup! test: add the start of an integration test for room history sharing

Author: richvdh

testing/matrix-sdk-integration-testing/src/tests/e2ee.rs

@@ -1244,8 +1244,19 @@ async fn test_history_share_on_invite() -> Result<()> {
                 .unwrap()
         }
 
-        let bob_devices = devices_seen(&alice, bob.user_id().unwrap()).await;
-        assert_eq!(bob_devices.devices().count(), 1, "Alice did not see bob's device");
+        timeout(
+            async {
+                loop {
+                    let bob_devices = devices_seen(&alice, bob.user_id().unwrap()).await;
+                    if bob_devices.devices().count() >= 1 {
+                        return;
+                    }
+                }
+            },
+            Duration::from_secs(5),
+        )
+        .await
+        .expect("Alice did not see bob's device");
 
         bob.sync_once().await?;
         let alice_devices = devices_seen(&bob, alice.user_id().unwrap()).await;