TF-657 Add headers and keywords property when get email content

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

@@ -13,11 +13,22 @@ class GetEmailContentSuccess extends UIState {
   final List<EmailContent> emailContents;
   final List<EmailContent> emailContentsDisplayed;
   final List<Attachment> attachments;
+  final bool readReceiptRequested;
 
-  GetEmailContentSuccess(this.emailContents, this.emailContentsDisplayed, this.attachments);
+  GetEmailContentSuccess(
+    this.emailContents,
+    this.emailContentsDisplayed,
+    this.attachments,
+    this.readReceiptRequested
+  );
 
   @override
-  List<Object?> get props => [emailContents, emailContentsDisplayed, attachments];
+  List<Object?> get props => [
+    emailContents,
+    emailContentsDisplayed,
+    attachments,
+    readReceiptRequested
+  ];
 }
 
 class GetEmailContentFailure extends FeatureFailure {

lib/features/email/domain/usecases/get_email_content_interactor.dart

@@ -26,9 +26,23 @@ class GetEmailContentInteractor {
         final newEmailContentsDisplayed = kIsWeb
             ? await emailRepository.addTooltipWhenHoverOnLink(newEmailContents)
             : newEmailContents;
-        yield Right<Failure, Success>(GetEmailContentSuccess(newEmailContents, newEmailContentsDisplayed, email.allAttachments));
+        yield Right<Failure, Success>(GetEmailContentSuccess(
+            newEmailContents,
+            newEmailContentsDisplayed,
+            email.allAttachments,
+            email.needShowNotificationMessageReadReceipt));
       } else if (email.allAttachments.isNotEmpty) {
-        yield Right<Failure, Success>(GetEmailContentSuccess([], [], email.allAttachments));
+        yield Right<Failure, Success>(GetEmailContentSuccess(
+            [],
+            [],
+            email.allAttachments,
+            email.needShowNotificationMessageReadReceipt));
+      } else if (email.headers?.isNotEmpty == true) {
+        yield Right<Failure, Success>(GetEmailContentSuccess(
+            [], 
+            [],
+            [],
+            email.needShowNotificationMessageReadReceipt));
       } else {
         yield Left(GetEmailContentFailure(null));
       }