Fix crash when opening archives simultaneously

app/src/main/kotlin/com/hippo/ehviewer/ui/CommonOperations.kt

@@ -281,14 +281,14 @@ suspend fun removeFromFavorites(galleryInfo: BaseGalleryInfo) = doModifyFavorite
     localFavorited = EhDB.containLocalFavorites(galleryInfo.gid),
 )
 
-context (DestinationsNavigator)
-fun navToReader(
-    info: BaseGalleryInfo,
-    page: Int = -1,
-) = navigate(ReaderScreenDestination(ReaderScreenArgs.Gallery(info, page)))
+fun DestinationsNavigator.navToReader(info: BaseGalleryInfo, page: Int = -1) =
+    navToReader(ReaderScreenArgs.Gallery(info, page))
 
 fun DestinationsNavigator.navToReader(uri: Uri) =
-    navigate(ReaderScreenDestination(ReaderScreenArgs.Archive(uri)))
+    navToReader(ReaderScreenArgs.Archive(uri))
+
+private fun DestinationsNavigator.navToReader(args: ReaderScreenArgs) =
+    navigate(ReaderScreenDestination(args)) { launchSingleTop = true }
 
 context(DialogState, Context, DestinationsNavigator)
 suspend fun doGalleryInfoAction(info: BaseGalleryInfo) {

app/src/main/kotlin/com/hippo/ehviewer/ui/reader/ReaderScreen.kt

@@ -34,6 +34,7 @@ import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.State
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.key
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberUpdatedState
@@ -114,7 +115,9 @@ fun AnimatedVisibilityScope.ReaderScreen(args: ReaderScreenArgs, navigator: Dest
         ) { error ->
             if (error == null) {
                 val info = (args as? ReaderScreenArgs.Gallery)?.info
-                ReaderScreen(pageLoader, info, navigator)
+                key(pageLoader) {
+                    ReaderScreen(pageLoader, info, navigator)
+                }
             } else {
                 Box(Modifier.fillMaxSize().background(bgColor), contentAlignment = Alignment.Center) {
                     Text(