loadingNode: hide ProgressIndicator in some cases.

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

@@ -281,7 +281,7 @@ class LoggedInFlowNode(
 
     override fun resolve(navTarget: NavTarget, buildContext: BuildContext): Node {
         return when (navTarget) {
-            NavTarget.Placeholder -> loadingNode(buildContext)
+            NavTarget.Placeholder -> loadingNode(buildContext, showProgressIndicator = false)
             NavTarget.LoggedInPermanent -> {
                 val callback = object : LoggedInNode.Callback {
                     override fun navigateToNotificationTroubleshoot() {

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

@@ -216,7 +216,7 @@ import timber.log.Timber
         return when (navTarget) {
             is NavTarget.LoggedInFlow -> {
                 val matrixClient = matrixSessionCache.getOrNull(navTarget.sessionId)
-                    ?: return loadingNode(buildContext).also {
+                    ?: return loadingNode(buildContext, showProgressIndicator = false).also {
                         Timber.w("Couldn't find any session, go through SplashScreen")
                     }
                 val inputs = LoggedInAppScopeFlowNode.Inputs(matrixClient)