Migrated llc Lists to be nullable instead of being an empty array

packages/stream_chat_persistence/lib/src/dao/member_dao.dart

@@ -34,14 +34,20 @@ class MemberDao extends DatabaseAccessor<DriftChatDatabase>
       bulkUpdateMembers({cid: memberList});
 
   /// Bulk updates the members data of multiple channels
-  Future<void> bulkUpdateMembers(Map<String, List<Member>> channelWithMembers) {
+  Future<void> bulkUpdateMembers(
+    Map<String, List<Member>?> channelWithMembers,
+  ) {
     final entities = channelWithMembers.entries
-        .map((entry) => entry.value.map(
+        .map((entry) =>
+            (entry.value?.map(
               (member) => member.toEntity(cid: entry.key),
-            ))
+            )) ??
+            [])
         .expand((it) => it)
         .toList(growable: false);
-    return batch((batch) => batch.insertAllOnConflictUpdate(members, entities));
+    return batch(
+      (batch) => batch.insertAllOnConflictUpdate(members, entities),
+    );
   }
 
   /// Deletes all the members whose [Members.channelCid] is present in [cids]