[mob] Sync removed clusters from a person

mobile/lib/services/machine_learning/face_ml/person/person_service.dart

@@ -109,6 +109,24 @@ class PersonService {
     );
   }
 
+  Future<void> removeClusterToPerson({
+    required String personID,
+    required int clusterID,
+  }) async {
+    final person = (await getPerson(personID))!;
+    final personData = person.data;
+    personData.assigned!.removeWhere((element) => element.id != clusterID);
+    await entityService.addOrUpdate(
+      EntityType.person,
+      json.encode(personData.toJson()),
+      id: personID,
+    );
+    await faceMLDataDB.removeClusterToPerson(
+      personID: personID,
+      clusterID: clusterID,
+    );
+  }
+
   Future<void> deletePerson(String personID, {bool onlyMapping = true}) async {
     if (onlyMapping) {
       final PersonEntity? entity = await getPerson(personID);

mobile/lib/ui/viewer/people/person_clusters_page.dart

@@ -3,9 +3,9 @@ import "package:flutter/material.dart";
 import "package:logging/logging.dart";
 import "package:photos/core/event_bus.dart";
 import "package:photos/events/people_changed_event.dart";
-import "package:photos/face/db.dart";
 import "package:photos/face/model/person.dart";
 import "package:photos/models/file/file.dart";
+import "package:photos/services/machine_learning/face_ml/person/person_service.dart";
 import "package:photos/services/search_service.dart";
 import "package:photos/theme/ente_theme.dart";
 import "package:photos/ui/viewer/file/no_thumbnail_widget.dart";
@@ -99,14 +99,13 @@ class _PersonClustersPageState extends State<PersonClustersPage> {
                                 GestureDetector(
                                   onTap: () async {
                                     try {
-                                      final int result = await FaceMLDataDB
+                                      await PersonService.instance
-                                          .instance
                                           .removeClusterToPerson(
                                         personID: widget.person.remoteID,
                                         clusterID: clusterID,
                                       );
                                       _logger.info(
-                                        "Removed cluster $clusterID from person ${widget.person.remoteID}, result: $result",
+                                        "Removed cluster $clusterID from person ${widget.person.remoteID}",
                                       );
                                       Bus.instance.fire(PeopleChangedEvent());
                                       setState(() {});