fix: allow importing favourite app even if list is empty

app/src/main/java/com/aurora/store/compose/ui/favourite/FavouriteScreen.kt

@@ -117,7 +117,7 @@ private fun ScreenContent(
 
     @Composable
     fun SetupMenu() {
-        FavouriteMenu { menuItem ->
+        FavouriteMenu(items = favourites.itemCount) { menuItem ->
             when (menuItem) {
                 MenuItem.IMPORT -> onImportFavourites()
                 MenuItem.EXPORT -> onExportFavourites()
@@ -130,7 +130,7 @@ private fun ScreenContent(
             TopAppBar(
                 title = stringResource(R.string.title_favourites_manager),
                 onNavigateUp = onNavigateUp,
-                actions = { if (favourites.itemCount != 0) SetupMenu() }
+                actions = { SetupMenu() }
             )
         }
     ) { paddingValues ->

app/src/main/java/com/aurora/store/compose/ui/favourite/menu/FavouriteMenu.kt

@@ -34,6 +34,7 @@ import com.aurora.store.compose.preview.ThemePreviewProvider
 fun FavouriteMenu(
     modifier: Modifier = Modifier,
     isExpanded: Boolean = false,
+    items: Int = 0,
     onMenuItemClicked: (menuItem: MenuItem) -> Unit = {}
 ) {
     var expanded by remember { mutableStateOf(isExpanded) }
@@ -56,7 +57,8 @@ fun FavouriteMenu(
             )
             DropdownMenuItem(
                 text = { Text(text = stringResource(R.string.action_export)) },
-                onClick = { onClick(MenuItem.EXPORT) }
+                onClick = { onClick(MenuItem.EXPORT) },
+                enabled = items > 0
             )
         }
     }