fix: the last block of a doc is randomly moved to the first position of the doc (#6264)

frontend/appflowy_flutter/lib/plugins/document/application/editor_transaction_adapter.dart

@@ -22,6 +22,7 @@ import 'package:appflowy_editor/appflowy_editor.dart'
         blockComponentDelta;
 import 'package:collection/collection.dart';
 import 'package:nanoid/nanoid.dart';
+import 'package:synchronized/synchronized.dart';
 
 const _kExternalTextType = 'text';
 
@@ -38,7 +39,33 @@ class TransactionAdapter {
   final DocumentService documentService;
   final String documentId;
 
+  // Controls the apply transaction flow
+  //
+  // Ensures transactions are applied in the correct order when dependencies exist.
+  // Example: If transaction B depends on transaction A, A must be applied first.
+  final Lock _applyLock = Lock();
+
   Future<void> apply(Transaction transaction, EditorState editorState) async {
+    await _applyLock.synchronized(
+      () async {
+        if (enableDocumentInternalLog) {
+          Log.debug('apply transaction begin ${transaction.hashCode}');
+        }
+
+        await _applyInternal(transaction, editorState);
+
+        if (enableDocumentInternalLog) {
+          Log.debug('apply transaction end ${transaction.hashCode}');
+        }
+      },
+      timeout: const Duration(seconds: 5),
+    );
+  }
+
+  Future<void> _applyInternal(
+    Transaction transaction,
+    EditorState editorState,
+  ) async {
     final stopwatch = Stopwatch()..start();
     if (enableDocumentInternalLog) {
       Log.debug('transaction => ${transaction.toJson()}');

frontend/appflowy_flutter/macos/Podfile.lock

@@ -142,7 +142,7 @@ SPEC CHECKSUMS:
   HotKey: e96d8a2ddbf4591131e2bb3f54e69554d90cdca6
   hotkey_manager: c32bf0bfe8f934b7bc17ab4ad5c4c142960b023c
   irondash_engine_context: da62996ee25616d2f01bbeb85dc115d813359478
-  local_notifier: c6c371695f914641ab7bc8601944f7e358632d0b
+  local_notifier: e9506bc66fc70311e8bc7291fb70f743c081e4ff
   package_info_plus: fa739dd842b393193c5ca93c26798dff6e3d0e0c
   path_provider_foundation: 3784922295ac71e43754bd15e0653ccfd36a147c
   ReachabilitySwift: 7f151ff156cea1481a8411701195ac6a984f4979

frontend/appflowy_flutter/pubspec.lock

@@ -2059,7 +2059,7 @@ packages:
     source: hosted
     version: "0.3.1"
   synchronized:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: synchronized
       sha256: "539ef412b170d65ecdafd780f924e5be3f60032a1128df156adad6c5b373d558"

frontend/appflowy_flutter/pubspec.yaml

@@ -157,6 +157,7 @@ dependencies:
 
   # Used to open local files on Mobile
   open_filex: ^4.5.0
+  synchronized: ^3.1.0+1
 
 dev_dependencies:
   flutter_lints: ^4.0.0