add attachmets from hint in client

dart/lib/src/sentry_client.dart

@@ -111,6 +111,7 @@ class SentryClient {
     preparedEvent = _eventWithoutBreadcrumbsIfNeeded(preparedEvent);
 
     var attachments = List<SentryAttachment>.from(scope?.attachments ?? []);
+    attachments.addAll(hint.attachments);
     var screenshot = hint.screenshot;
     if (screenshot != null) {
       attachments.add(screenshot);
@@ -323,6 +324,9 @@ class SentryClient {
     final attachments = scope?.attachments
         .where((element) => element.addToTransactions)
         .toList();
+
+    // TODO Do we need to add attahcments?
+
     final envelope = SentryEnvelope.fromTransaction(
       preparedTransaction,
       _options.sdk,

dart/test/hint_test.dart

@@ -2,7 +2,6 @@ import 'package:sentry/sentry.dart';
 import 'package:test/test.dart';
 
 void main() {
-
   late Fixture fixture;
 
   setUp(() {

dart/test/sentry_client_test.dart

@@ -1413,6 +1413,20 @@ void main() {
       expect(envelope.header.traceContext, isNotNull);
     });
 
+    test('captureEvent adds attachments from hint', () async {
+      final attachment = SentryAttachment.fromIntList([], "fixture-fileName");
+      final hint = Hint.withAttachment(attachment);
+
+      final sut = fixture.getSut();
+      await sut.captureEvent(fakeEvent, hint: hint);
+
+      final capturedEnvelope = (fixture.transport).envelopes.first;
+      final attachmentItem = capturedEnvelope.items.firstWhereOrNull(
+          (element) => element.header.type == SentryItemType.attachment);
+      expect(attachmentItem?.header.attachmentType,
+          SentryAttachment.typeAttachmentDefault);
+    });
+
     test('captureEvent adds screenshot from hint', () async {
       final client = fixture.getSut();
       final screenshot =