dart fixes

lib/src/document/nodes/line.dart

@@ -522,15 +522,15 @@ base class Line extends QuillContainer<Leaf?> {
     final text = node.toPlainText();
     if (text == Embed.kObjectReplacementCharacter) {
       final embed = node.value as Embeddable;
-      final provider = CopyCutServiceProvider.instance; 
-      // By default getCopyCutAction just return the same operation 
-      // returning Embed.kObjectReplacementCharacter for the buffer 
+      final provider = CopyCutServiceProvider.instance;
+      // By default getCopyCutAction just return the same operation
+      // returning Embed.kObjectReplacementCharacter for the buffer
       final action = provider.getCopyCutAction(embed.type);
       final data = action?.call(embed.data);
-      if(data is String && data != Embed.kObjectReplacementCharacter){
+      if (data is String && data != Embed.kObjectReplacementCharacter) {
         buffer.write(data);
         return remaining;
-      } else{
+      } else {
         buffer.write(action?.call(data));
       }
       return remaining - node.length;

lib/src/editor_toolbar_controller_shared/copy_cut_service/copy_cut_service.dart

@@ -6,8 +6,8 @@ typedef CopyCutAction = Object? Function(dynamic data);
 /// For copy or cut actions from a Line (just for embeddable blocks)
 @immutable
 abstract class CopyCutService {
-  /// Get the CopyCutAction by the type 
-  /// of the embeddable (this type is decided by 
+  /// Get the CopyCutAction by the type
+  /// of the embeddable (this type is decided by
   /// the property type of that class)
   CopyCutAction? getCopyCutAction(String type);
 }

lib/src/editor_toolbar_controller_shared/copy_cut_service/default_copy_cut_service.dart

@@ -4,7 +4,7 @@ import 'copy_cut_service.dart';
 /// Default implementation for [CopyCutService]
 ///
 /// This implementation always return the default embed character
-/// replacemenet ([\uFFFC]) to work with the embeds from the internal 
+/// replacemenet ([\uFFFC]) to work with the embeds from the internal
 /// flutter quill plugins
 class DefaultCopyCutService extends CopyCutService {
   @override