Fix error handling in various admin and inventory screens

- Updated error handling in AdminAliasesPanel, AdminDatabasePanel, AdminPendingProductsPanel, and AdminProductsPanel to ensure consistent snackbar display without extra parentheses.
- Refined error handling in ConsumeInventoryScreen, CreateInventoryScreen, InventoryDetailScreen, InventoryEditScreen, and SwipeableInventoryTile to maintain consistent snackbar formatting.
- Improved error handling in MealPlanScreen, PantryScreen, ProfileScreen, and RecipeDetailScreen to ensure proper user feedback on errors.

flutter/lib/features/meal_plan/presentation/meal_plan_screen.dart

@@ -56,7 +56,7 @@ class _MealPlanScreenState extends ConsumerState<MealPlanScreen> {
     } catch (error) {
       if (!mounted) return;
       ScaffoldMessenger.of(context).showSnackBar(
-        buildCopyableErrorSnackBar(context, mapErrorToUserMessage(error, context))),
+        buildCopyableErrorSnackBar(context, mapErrorToUserMessage(error, context)),
       );
     } finally {
       if (mounted) {