route avatar crop and profile view through AppRoutes

lib/widget/chat_background_picker_sheet.dart

@@ -3,7 +3,7 @@ import 'dart:typed_data';
 import 'package:flutter/material.dart';
 import 'package:image_picker/image_picker.dart';
 
-import 'avatar_crop_page.dart';
+import '../routing/app_routes.dart';
 import 'file_pick.dart';
 
 /// Bottom sheet with "from gallery" and "take photo" actions for choosing a
@@ -61,12 +61,7 @@ Future<Uint8List?> showChatBackgroundPickerSheet(BuildContext context) async {
 Future<Uint8List?> cropChatBackgroundImage(
   BuildContext context,
   Uint8List bytes,
-) => Navigator.of(context).push<Uint8List>(
-  MaterialPageRoute(
-    fullscreenDialog: true,
-    builder: (_) => AvatarCropPage(imageBytes: bytes, aspectRatio: null),
-  ),
-);
+) => AppRoutes.openAvatarCrop(context, imageBytes: bytes, aspectRatio: null);
 
 Future<Uint8List?> _pickRaw(Future<XFile?> Function() pick) async {
   final picked = await pick();