feat(mobile): Allow users to set profile picture from asset viewer (#25517)

* init

* fix

* styling

* temporary workaround for 500 error

**Root cause:**
The autogenerated Dart OpenAPI client (`UsersApi.createProfileImage()`) had two issues:
1. It set `Content-Type: multipart/form-data` without a boundary, which overrode the correct header that Dart's `MultipartRequest` would set (`multipart/form-data; boundary=...`).
2. It added the file to both `mp.fields` and `mp.files`, creating a duplicate text field.

**Result:**
Multer on the server failed to parse the multipart body, so `@UploadedFile()` was `undefined` → accessing `file.path` in `UserService.createProfileImage()` threw → **500 Internal Server Error**.

**Workaround:**
Bypass the autogenerated method in `UserApiRepository.createProfileImage()` and send the multipart request directly using the same `ApiClient` (basePath + auth), ensuring:
- No manual `Content-Type` header (let `MultipartRequest` set it with boundary)
- File only in `mp.files`, not `mp.fields`
- Proper filename fallback

* Revert "temporary workaround for 500 error"

This reverts commit 8436cd402632ca7be9272a1c72fdaf0763dcefb6.

* generate route for ProfilePictureCropPage

* add route import

* simplify

* try this

* Revert "try this"

This reverts commit fcf37d2801055c49010ddb4fd271feb900ee645a.

* try patching

* Reapply "temporary workaround for 500 error"

This reverts commit faeed810c21e4c9f0839dfff1f34aa6183469e56.

* Revert "Reapply "temporary workaround for 500 error""

This reverts commit a14a0b76d14975af98ef91748576a79cef959635.

* fix upload

* Refactor image conversion logic by introducing a new utility function. Replace inline image-to-Uint8List conversion with the new utility in EditImagePage, DriftEditImagePage, and ProfilePictureCropPage.

* use toast over snack

* format

* Revert "try patching"

This reverts commit 68a616522a1eee88c4a9755a314c0017e6450c0f.

* Enhance toast notification in ProfilePictureCropPage to include success type for better user feedback.

* Revert "simplify"

This reverts commit 8e85057a40.

* format

* add tests

* refactor to use statefulwidget

* format

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/presentation/pages/editing/drift_edit.page.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:ui';
 
 import 'package:auto_route/auto_route.dart';
 import 'package:cancellation_token_http/http.dart';
@@ -14,6 +13,7 @@ import 'package:immich_mobile/providers/background_sync.provider.dart';
 import 'package:immich_mobile/repositories/file_media.repository.dart';
 import 'package:immich_mobile/routing/router.dart';
 import 'package:immich_mobile/services/foreground_upload.service.dart';
+import 'package:immich_mobile/utils/image_converter.dart';
 import 'package:immich_mobile/widgets/common/immich_toast.dart';
 import 'package:logging/logging.dart';
 import 'package:path/path.dart' as p;
@@ -33,23 +33,6 @@ class DriftEditImagePage extends ConsumerWidget {
   final bool isEdited;
 
   const DriftEditImagePage({super.key, required this.asset, required this.image, required this.isEdited});
-  Future<Uint8List> _imageToUint8List(Image image) async {
-    final Completer<Uint8List> completer = Completer();
-    image.image
-        .resolve(const ImageConfiguration())
-        .addListener(
-          ImageStreamListener((ImageInfo info, bool _) {
-            info.image.toByteData(format: ImageByteFormat.png).then((byteData) {
-              if (byteData != null) {
-                completer.complete(byteData.buffer.asUint8List());
-              } else {
-                completer.completeError('Failed to convert image to bytes');
-              }
-            });
-          }, onError: (exception, stackTrace) => completer.completeError(exception)),
-        );
-    return completer.future;
-  }
 
   void _exitEditing(BuildContext context) {
     // this assumes that the only way to get to this page is from the AssetViewerRoute
@@ -58,7 +41,7 @@ class DriftEditImagePage extends ConsumerWidget {
 
   Future<void> _saveEditedImage(BuildContext context, BaseAsset asset, Image image, WidgetRef ref) async {
     try {
-      final Uint8List imageData = await _imageToUint8List(image);
+      final Uint8List imageData = await imageToUint8List(image);
       LocalAsset? localAsset;
 
       try {