ignore invalid account data

lib/controllers/account_data.dart

@@ -1,6 +1,7 @@
 import "dart:convert";
 
 import "package:fast_immutable_collections/fast_immutable_collections.dart";
+import "package:flutter/foundation.dart";
 import "package:flutter_riverpod/flutter_riverpod.dart";
 import "package:nexus/models/account_data.dart";
 
@@ -9,11 +10,16 @@ class AccountDataController extends Notifier<AccountData> {
   AccountData build() => .new();
 
   void update(IMap<String, IMap<String, dynamic>> newAccountData) =>
-      state = .fromJson({
-        ...json.decode(json.encode(state.toJson())),
-        ...newAccountData
-            .map((key, value) => MapEntry(key, value["content"]))
-            .unlock,
+      state = newAccountData.entries.fold(state, (data, entry) {
+        try {
+          return .fromJson({
+            ...json.decode(json.encode(data.toJson())),
+            entry.key: entry.value["content"],
+          });
+        } catch (error) {
+          debugPrint("Ignoring invalid ${entry.key} account data: $error");
+          return data;
+        }
       });
 
   static final provider = NotifierProvider<AccountDataController, AccountData>(

lib/models/account_data.dart

@@ -18,15 +18,9 @@ class const AccountData({
   final RecentEmojiData recentEmoji = const RecentEmojiData(),
 
   /// Room image packs the user has enabled everywhere
-  @JsonKey(
-    name: AccountData.imagePackRoomsKey,
-    fromJson: ImagePackRooms.tryFromJson,
-  )
+  @JsonKey(name: AccountData.imagePackRoomsKey)
   final ImagePackRooms? imagePackRooms,
-  @JsonKey(
-    name: AccountData.legacyImagePackRoomsKey,
-    fromJson: ImagePackRooms.tryFromJson,
-  )
+  @JsonKey(name: AccountData.legacyImagePackRoomsKey)
   final ImagePackRooms? legacyImagePackRooms,
 }) with _$AccountData {
   static const invitePermissionConfigKey = "m.invite_permission_config";
@@ -59,15 +53,6 @@ class const ImagePackRooms({
   /// empty) object
   final IMap<String, IMap<String, Map<String, dynamic>>> rooms = const .empty(),
 }) with _$ImagePackRooms {
-  static ImagePackRooms? tryFromJson(Map<String, dynamic>? json) {
-    if (json == null) return null;
-    try {
-      return .fromJson(json);
-    } catch (_) {
-      return null;
-    }
-  }
-
   Map<String, Object?> toJson() => _$ImagePackRoomsToJson(this);
 
   factory ImagePackRooms.fromJson(Map<String, Object?> json) =>