use saveable state holder

app/src/main/java/com/vanced/manager/ui/MainActivity.kt

@@ -77,7 +77,7 @@ class MainActivity : ComponentActivity() {
             ManagerNavigator(
                 navigationController = navController
             ) {
-                it.last().content()
+                it.content()
             }
         }
     }

app/src/main/java/com/vanced/manager/ui/navigation/ManagerNavigator.kt

@@ -3,13 +3,16 @@ package com.vanced.manager.ui.navigation
 import androidx.compose.animation.*
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveableStateHolder
+import com.vanced.manager.ui.util.Screen
 
 @OptIn(ExperimentalAnimationApi::class)
 @Composable
-fun <T> ManagerNavigator(
+fun <T : Screen> ManagerNavigator(
     navigationController: NavigationController<T>,
-    content: @Composable (targetContent: List<T>) -> Unit
+    content: @Composable (targetContent: T) -> Unit
 ) {
+    val saveableStateHolder = rememberSaveableStateHolder()
     val screens = remember { navigationController.screens }
 
     //TODO Animation is not working for some weird reasons
@@ -25,6 +28,9 @@ fun <T> ManagerNavigator(
         },
         targetState = screens
     ) { targetContents ->
-        content(targetContents)
+        val targetContent = targetContents.last()
+        saveableStateHolder.SaveableStateProvider(key = targetContent.route) {
+            content(targetContent)
+        }
     }
 }