TF-4050 refactor: move attachment preview & download logic to download controller

lib/features/email/domain/state/parse_email_by_blob_id_state.dart

@@ -1,21 +1,37 @@
 import 'package:core/presentation/state/failure.dart';
 import 'package:core/presentation/state/success.dart';
+import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/id.dart';
+import 'package:jmap_dart_client/jmap/core/session/session.dart';
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 
 class ParsingEmailByBlobId extends LoadingState {}
 
 class ParseEmailByBlobIdSuccess extends UIState {
-
+  final AccountId? accountId;
+  final Session? session;
+  final String ownEmailAddress;
   final Email email;
   final Id blobId;
 
-  ParseEmailByBlobIdSuccess(this.email, this.blobId);
+  ParseEmailByBlobIdSuccess({
+    required this.email,
+    required this.blobId,
+    required this.accountId,
+    required this.session,
+    required this.ownEmailAddress,
+  });
 
   @override
-  List<Object> get props => [email, blobId];
+  List<Object?> get props => [
+        email,
+        blobId,
+        accountId,
+        session,
+        ownEmailAddress,
+      ];
 }
 
 class ParseEmailByBlobIdFailure extends FeatureFailure {
   ParseEmailByBlobIdFailure(dynamic exception) : super(exception: exception);
-}
+}

lib/features/email/domain/state/preview_email_from_eml_file_state.dart

@@ -1,20 +1,34 @@
 import 'package:core/presentation/state/failure.dart';
 import 'package:core/presentation/state/success.dart';
+import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:jmap_dart_client/jmap/core/session/session.dart';
 import 'package:tmail_ui_user/features/email/presentation/model/eml_previewer.dart';
 
 class PreviewingEmailFromEmlFile extends LoadingState {}
 
 class PreviewEmailFromEmlFileSuccess extends UIState {
-
   final EMLPreviewer emlPreviewer;
+  final AccountId? accountId;
+  final Session? session;
+  final String ownEmailAddress;
 
-  PreviewEmailFromEmlFileSuccess(this.emlPreviewer);
+  PreviewEmailFromEmlFileSuccess(
+    this.emlPreviewer,
+    this.accountId,
+    this.session,
+    this.ownEmailAddress,
+  );
 
   @override
-  List<Object?> get props => [emlPreviewer];
+  List<Object?> get props => [
+        emlPreviewer,
+        accountId,
+        session,
+        ownEmailAddress,
+      ];
 }
 
 class PreviewEmailFromEmlFileFailure extends FeatureFailure {
-
-  PreviewEmailFromEmlFileFailure(dynamic exception) : super(exception: exception);
-}
+  PreviewEmailFromEmlFileFailure(dynamic exception)
+      : super(exception: exception);
+}

lib/features/email/domain/state/preview_pdf_file_state.dart

@@ -1,6 +0,0 @@
-import 'package:core/presentation/state/failure.dart';
-
-class PreviewPDFFileFailure extends FeatureFailure {
-
-  PreviewPDFFileFailure(dynamic exception) : super(exception: exception);
-}