Fix crash when clicking fast on back key on the Developer settings screen.

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/PreferencesFlowNode.kt

@@ -186,6 +186,10 @@ class PreferencesFlowNode(
                     override fun navigateToPushHistory() {
                         backstack.push(NavTarget.PushHistory)
                     }
+
+                    override fun onDone() {
+                        backstack.pop()
+                    }
                 }
                 createNode<DeveloperSettingsNode>(buildContext, listOf(developerSettingsCallback))
             }

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsNode.kt

@@ -31,6 +31,7 @@ class DeveloperSettingsNode(
 ) : Node(buildContext, plugins = plugins) {
     interface Callback : Plugin {
         fun navigateToPushHistory()
+        fun onDone()
     }
 
     private val callback: Callback = callback()
@@ -49,7 +50,7 @@ class DeveloperSettingsNode(
             modifier = modifier,
             onOpenShowkase = ::openShowkase,
             onPushHistoryClick = callback::navigateToPushHistory,
-            onBackClick = ::navigateUp
+            onBackClick = callback::onDone,
         )
     }
 }