add exports, minor refactoring

packages/stream_chat/lib/src/core/models/attachment_file.freezed.dart

@@ -1,5 +1,6 @@
 // coverage:ignore-file
 // GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
 // ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target
 
 part of 'attachment_file.dart';
@@ -324,13 +325,15 @@ class _$InProgress implements InProgress {
     return identical(this, other) ||
         (other.runtimeType == runtimeType &&
             other is InProgress &&
-            (identical(other.uploaded, uploaded) ||
-                other.uploaded == uploaded) &&
-            (identical(other.total, total) || other.total == total));
+            const DeepCollectionEquality().equals(other.uploaded, uploaded) &&
+            const DeepCollectionEquality().equals(other.total, total));
   }
 
   @override
-  int get hashCode => Object.hash(runtimeType, uploaded, total);
+  int get hashCode => Object.hash(
+      runtimeType,
+      const DeepCollectionEquality().hash(uploaded),
+      const DeepCollectionEquality().hash(total));
 
   @JsonKey(ignore: true)
   @override
@@ -612,11 +615,12 @@ class _$Failed implements Failed {
     return identical(this, other) ||
         (other.runtimeType == runtimeType &&
             other is Failed &&
-            (identical(other.error, error) || other.error == error));
+            const DeepCollectionEquality().equals(other.error, error));
   }
 
   @override
-  int get hashCode => Object.hash(runtimeType, error);
+  int get hashCode =>
+      Object.hash(runtimeType, const DeepCollectionEquality().hash(error));
 
   @JsonKey(ignore: true)
   @override

packages/stream_chat/lib/src/core/models/channel_model.dart

@@ -13,7 +13,7 @@ class ChannelModel {
     String? id,
     String? type,
     String? cid,
-    this.ownCapabilities = const [],
+    this.ownCapabilities,
     ChannelConfig? config,
     this.createdBy,
     this.frozen = false,
@@ -54,7 +54,7 @@ class ChannelModel {
 
   /// List of user permissions on this channel
   @JsonKey(includeIfNull: false, toJson: Serializer.readOnly)
-  final List<String> ownCapabilities;
+  final List<String>? ownCapabilities;
 
   /// The channel configuration data
   @JsonKey(includeIfNull: false, toJson: Serializer.readOnly)

packages/stream_chat/lib/src/core/models/channel_model.g.dart

@@ -11,9 +11,8 @@ ChannelModel _$ChannelModelFromJson(Map<String, dynamic> json) => ChannelModel(
       type: json['type'] as String?,
       cid: json['cid'] as String?,
       ownCapabilities: (json['own_capabilities'] as List<dynamic>?)
-              ?.map((e) => e as String)
-              .toList() ??
-          const [],
+          ?.map((e) => e as String)
+          .toList(),
       config: json['config'] == null
           ? null
           : ChannelConfig.fromJson(json['config'] as Map<String, dynamic>),