IFSC optimized

lib/features/beneficiaries/screens/add_beneficiary_screen.dart

@@ -80,7 +80,7 @@ final _ifscFieldKey = GlobalKey<FormFieldState>();
       final result = await beneficiaryService.validateIFSC(ifsc); 
 
       if (mounted) {
-        if (result.bankName == null || result.bankName.isEmpty) {
+        if (result.bankName.isEmpty) {
           ScaffoldMessenger.of(context).showSnackBar(
             SnackBar(content: Text(AppLocalizations.of(context).invalidIfsc)),
           );