Update widget test

Author: dhiyaaulauliyaa

test/chart/base/axis_chart/axis_chart_widgets_test.dart

@@ -7,11 +7,11 @@ void main() {
  'SideTitleWidget left',
  (WidgetTester tester) async {
  await tester.pumpWidget(
- MaterialApp(
+ const MaterialApp(
  home: Scaffold(
  body: SideTitleWidget(
  axisSide: AxisSide.left,
- child: const Text('1s'),
+ child: Text('1s'),
  ),
  ),
  ),
@@ -25,11 +25,11 @@ void main() {
  'SideTitleWidget top',
  (WidgetTester tester) async {
  await tester.pumpWidget(
- MaterialApp(
+ const MaterialApp(
  home: Scaffold(
  body: SideTitleWidget(
  axisSide: AxisSide.top,
- child: const Text('1s'),
+ child: Text('1s'),
  ),
  ),
  ),
@@ -43,11 +43,11 @@ void main() {
  'SideTitleWidget right',
  (WidgetTester tester) async {
  await tester.pumpWidget(
- MaterialApp(
+ const MaterialApp(
  home: Scaffold(
  body: SideTitleWidget(
  axisSide: AxisSide.right,
- child: const Text('1s'),
+ child: Text('1s'),
  ),
  ),
  ),
@@ -61,11 +61,11 @@ void main() {
  'SideTitleWidget bottom',
  (WidgetTester tester) async {
  await tester.pumpWidget(
- MaterialApp(
+ const MaterialApp(
  home: Scaffold(
  body: SideTitleWidget(
  axisSide: AxisSide.bottom,
- child: const Text('1s'),
+ child: Text('1s'),
  ),
  ),
  ),