Improve fallback icons for account/category

lib/entity/account.dart

@@ -1,7 +1,6 @@
 import 'package:flow/data/flow_icon.dart';
 import 'package:flow/entity/_base.dart';
 import 'package:flow/entity/transaction.dart';
-import 'package:flutter/widgets.dart';
 import 'package:json_annotation/json_annotation.dart';
 import 'package:material_symbols_icons/symbols.dart';
 import 'package:objectbox/objectbox.dart';
@@ -38,16 +37,13 @@ class Account implements EntityBase {
 
   bool excludeFromTotalBalance;
 
-  /// Returns [IconData] from [iconCode]
-  ///
-  /// Falls back to [Symbols.error_rounded]
   @Transient()
   @JsonKey(includeFromJson: false, includeToJson: false)
   FlowIconData get icon {
     try {
       return FlowIconData.parse(iconCode);
     } catch (e) {
-      return FlowIconData.emoji("🤷");
+      return FlowIconData.icon(Symbols.wallet_rounded);
     }
   }
 

lib/entity/category.dart

@@ -2,6 +2,7 @@ import 'package:flow/data/flow_icon.dart';
 import 'package:flow/entity/_base.dart';
 import 'package:flow/entity/transaction.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:material_symbols_icons/symbols.dart';
 import 'package:objectbox/objectbox.dart';
 import 'package:uuid/uuid.dart';
 
@@ -34,7 +35,7 @@ class Category implements EntityBase {
     try {
       return FlowIconData.parse(iconCode);
     } catch (e) {
-      return FlowIconData.emoji("🤷");
+      return FlowIconData.icon(Symbols.category_rounded);
     }
   }
 

lib/routes/account_page.dart

@@ -47,7 +47,8 @@ class _AccountPageState extends State<AccountPage> {
   late final Account? _currentlyEditing;
 
   String get iconCodeOrError =>
-      _iconData?.toString() ?? FlowIconData.emoji("❌").toString();
+      _iconData?.toString() ??
+      FlowIconData.icon(Symbols.wallet_rounded).toString();
 
   dynamic error;
 

lib/routes/category_page.dart

@@ -40,7 +40,8 @@ class _CategoryPageState extends State<CategoryPage> {
   late final Category? _currentlyEditing;
 
   String get iconCodeOrError =>
-      _iconData?.toString() ?? FlowIconData.emoji("❌").toString();
+      _iconData?.toString() ??
+      FlowIconData.icon(Symbols.category_rounded).toString();
 
   dynamic error;