Fix BoxShadow toString() (#105696)

packages/flutter/lib/src/painting/box_shadow.dart

@@ -28,8 +28,8 @@ import 'debug.dart';
 class BoxShadow extends ui.Shadow {
   /// Creates a box shadow.
   ///
-  /// By default, the shadow is solid black with zero [offset], [blurRadius],
-  /// and [spreadRadius].
+  /// By default, the shadow is solid black with zero [offset], zero [blurRadius],
+  /// zero [spreadRadius], and [BlurStyle.normal].
   const BoxShadow({
     super.color,
     super.offset,
@@ -145,5 +145,5 @@ class BoxShadow extends ui.Shadow {
   int get hashCode => Object.hash(color, offset, blurRadius, spreadRadius, blurStyle);
 
   @override
-  String toString() => 'BoxShadow($color, $offset, ${debugFormatDouble(blurRadius)}, ${debugFormatDouble(spreadRadius)}), $blurStyle';
+  String toString() => 'BoxShadow($color, $offset, ${debugFormatDouble(blurRadius)}, ${debugFormatDouble(spreadRadius)}, $blurStyle)';
 }

packages/flutter/test/painting/box_painter_test.dart

@@ -147,8 +147,8 @@ void main() {
   });
 
   test('BoxShadow toString test', () {
-    expect(const BoxShadow(blurRadius: 4.0).toString(), equals('BoxShadow(Color(0xff000000), Offset(0.0, 0.0), 4.0, 0.0), BlurStyle.normal'));
-    expect(const BoxShadow(blurRadius: 4.0, blurStyle: BlurStyle.solid).toString(), equals('BoxShadow(Color(0xff000000), Offset(0.0, 0.0), 4.0, 0.0), BlurStyle.solid'));
+    expect(const BoxShadow(blurRadius: 4.0).toString(), equals('BoxShadow(Color(0xff000000), Offset(0.0, 0.0), 4.0, 0.0, BlurStyle.normal)'));
+    expect(const BoxShadow(blurRadius: 4.0, blurStyle: BlurStyle.solid).toString(), equals('BoxShadow(Color(0xff000000), Offset(0.0, 0.0), 4.0, 0.0, BlurStyle.solid)'));
   });
 
   testWidgets('BoxShadow BoxStyle.solid', (WidgetTester tester) async {