[MatrixSDK] finish mapping timeline and makes it compile

appnav/src/main/kotlin/io/element/android/appnav/RootFlowNode.kt

@@ -119,14 +119,15 @@ class RootFlowNode @AssistedInject constructor(
             onSuccess(latestKnownUserId)
             return
         }
-        val matrixClient = authenticationService.restoreSession(UserId(latestKnownUserId.value))
-        if (matrixClient == null) {
-            Timber.v("Failed to restore session...")
-            onFailure()
-        } else {
-            matrixClientsHolder.add(matrixClient)
-            onSuccess(matrixClient.sessionId)
-        }
+        authenticationService.restoreSession(UserId(latestKnownUserId.value))
+            .onSuccess { matrixClient ->
+                matrixClientsHolder.add(matrixClient)
+                onSuccess(matrixClient.sessionId)
+            }
+            .onFailure {
+                Timber.v("Failed to restore session...")
+                onFailure()
+            }
     }
 
     private fun onOpenBugReport() {

appnav/src/main/kotlin/io/element/android/appnav/di/MatrixClientsHolder.kt

@@ -64,10 +64,13 @@ class MatrixClientsHolder @Inject constructor(private val authenticationService:
         runBlocking {
             userIds.forEach { userId ->
                 Timber.v("Restore matrix session: $userId")
-                val matrixClient = authenticationService.restoreSession(userId)
-                if (matrixClient != null) {
-                    add(matrixClient)
-                }
+                authenticationService.restoreSession(userId)
+                    .onSuccess { matrixClient ->
+                        add(matrixClient)
+                    }
+                    .onFailure {
+                        Timber.e("Fail to restore session")
+                    }
             }
         }
     }