🔧Fix `readOnlyMouseCursor` losing in construction function (#1875)

lib/src/models/config/editor/editor_configurations.dart

@@ -80,6 +80,7 @@ class QuillEditorConfigurations extends Equatable {
     this.enableScribble = false,
     this.onScribbleActivated,
     this.scribbleAreaInsets,
+    this.readOnlyMouseCursor = SystemMouseCursors.text,
   });
 
   final QuillSharedConfigurations sharedConfigurations;
@@ -157,6 +158,9 @@ class QuillEditorConfigurations extends Equatable {
   final bool? showCursor;
   final bool? paintCursorAboveText;
 
+  /// The [readOnlyMouseCursor] is used for Windows, macOS when [readOnly] is [true]
+  final MouseCursor readOnlyMouseCursor;
+
   /// Whether to enable user interface affordances for changing the
   /// text selection.
   ///

lib/src/models/config/raw_editor/raw_editor_configurations.dart

@@ -85,6 +85,7 @@ class QuillRawEditorConfigurations extends Equatable {
     this.enableScribble = false,
     this.onScribbleActivated,
     this.scribbleAreaInsets,
+    this.readOnlyMouseCursor = SystemMouseCursors.text,
   });
 
   /// Controls the document being edited.
@@ -177,7 +178,7 @@ class QuillRawEditorConfigurations extends Equatable {
   final CursorStyle cursorStyle;
 
   /// The [readOnlyMouseCursor] is used for Windows, macOS when [readOnly] is [true]
-  final MouseCursor readOnlyMouseCursor = SystemMouseCursors.text;
+  final MouseCursor readOnlyMouseCursor;
 
   /// Configures how the platform keyboard will select an uppercase or
   /// lowercase keyboard.

lib/src/widgets/editor/editor.dart

@@ -290,6 +290,7 @@ class QuillEditorState extends State<QuillEditor>
               enableScribble: configurations.enableScribble,
               onScribbleActivated: configurations.onScribbleActivated,
               scribbleAreaInsets: configurations.scribbleAreaInsets,
+              readOnlyMouseCursor: configurations.readOnlyMouseCursor,
             ),
           ),
         ),