feat: Re-use AddLabelToEmailMixin for logic add label to email in EmailView

lib/features/mailbox_dashboard/presentation/extensions/labels/handle_logic_label_extension.dart

@@ -1,8 +1,12 @@
 import 'package:core/utils/app_logger.dart';
 import 'package:get/get.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email.dart';
+import 'package:jmap_dart_client/jmap/mail/email/keyword_identifier.dart';
+import 'package:tmail_ui_user/features/email/presentation/action/email_ui_action.dart';
 import 'package:tmail_ui_user/features/mailbox_dashboard/presentation/controller/mailbox_dashboard_controller.dart';
+import 'package:tmail_ui_user/features/mailbox_dashboard/presentation/extensions/update_current_emails_flags_extension.dart';
 
-extension HandleLogicLabelExtension on MailboxDashBoardController {
+extension HandleLogicLabelExtension on MailboxDashBoardController  {
   bool get isLabelCapabilitySupported {
     final accountId = this.accountId.value;
     final session = sessionCurrent;
@@ -35,4 +39,39 @@ extension HandleLogicLabelExtension on MailboxDashBoardController {
       isLabelAvailable: isLabelAvailable,
     );
   }
+
+  void syncLabelForEmail(
+    EmailId emailId,
+    KeyWordIdentifier labelKeyword,
+    bool shouldRemove,
+  ) {
+    _syncLabelForEmailList(emailId, labelKeyword, shouldRemove);
+    _refreshLabelSettingEnabled();
+
+    if (isEmailOpened) {
+      dispatchEmailUIAction(
+        SyncUpdateLabelForEmailOnMemory(
+          emailId: emailId,
+          labelKeyword: labelKeyword,
+          shouldRemove: shouldRemove,
+        ),
+      );
+    }
+  }
+
+  void _syncLabelForEmailList(
+    EmailId emailId,
+    KeyWordIdentifier labelKeyword,
+    bool shouldRemove,
+  ) {
+    updateEmailFlagByEmailIds(
+      [emailId],
+      isLabelAdded: !shouldRemove,
+      labelKeyword: labelKeyword,
+    );
+  }
+
+  void _refreshLabelSettingEnabled() {
+    labelController.isLabelSettingEnabled.refresh();
+  }
 }