Fixed search field in payment page and cleaned up payment flow

frontend/pshared/lib/provider/recipient/provider.dart

@@ -14,6 +14,7 @@ class RecipientsProvider extends GenericProvider<Recipient> {
 
   RecipientFilter _selectedFilter = RecipientFilter.all;
   String _query = '';
+  String? _previousRecipientRef;
 
   RecipientFilter get selectedFilter => _selectedFilter;
   String get query => _query;
@@ -22,6 +23,10 @@ class RecipientsProvider extends GenericProvider<Recipient> {
 
   RecipientsProvider() : super(service: RecipientService.basicService);
 
+  Recipient? get previousRecipient => _previousRecipientRef == null
+      ? null
+      : getItemByRef(_previousRecipientRef!);
+
   List<Recipient> get filteredRecipients {
     List<Recipient> filtered = recipients.where((r) {
       switch (_selectedFilter) {
@@ -53,6 +58,24 @@ class RecipientsProvider extends GenericProvider<Recipient> {
     notifyListeners();
   }
 
+  @override
+  bool setCurrentObject(String? objectRef) {
+    final currentRef = currentObject?.id;
+    final didUpdate = super.setCurrentObject(objectRef);
+
+    if (didUpdate && currentRef != null && currentRef != objectRef) {
+      _previousRecipientRef = currentRef;
+    }
+
+    return didUpdate;
+  }
+
+  void restorePreviousRecipient() {
+    if (_previousRecipientRef != null) {
+      setCurrentObject(_previousRecipientRef);
+    }
+  }
+
   Future<Recipient> create({
     required String name,
     required String email,