Text not aligning to center properly with AnimatedTextKit and DefaultTextStyle

I'm encountering an issue with aligning text to the center when using the `AnimatedTextKit` widget along with the `DefaultTextStyle` widget in Flutter. Despite specifying` textAlign: TextAlign.center` in `DefaultTextStyle`, the text isn't being aligned in the center of the widget.

**Steps to Reproduce:**

- Wrap an AnimatedTextKit widget inside DefaultTextStyle with textAlign: TextAlign.center.
- Set the style of the DefaultTextStyle and use TyperAnimatedText as one of the animated texts.
- The text appears misaligned or not centered as expected.

```
DefaultTextStyle(
textAlign: TextAlign.center,
style: contentTextStyle ??
AppTextStyle.kInter19x400.copyWith(
fontSize: 20.sp,
color: Colors.white,
),
child: AnimatedTextKit(
isRepeatingAnimation: false,
animatedTexts: [
TyperAnimatedText(
"${controller.chats[index].content?.toLowerCase()}",
speed: const Duration(
milliseconds: 30,
),
),
],
),
),

```

**Expected Behavior:**
The text should be properly centered within the AnimatedTextKit widget, respecting the textAlign: TextAlign.center property.

**Actual Behavior:**
The text is not aligned to the center as expected, even with textAlign: TextAlign.center set in the DefaultTextStyle.

Look at the AnimatedTextKit widget and its TyperAnimatedText implementation to see how text alignment is handled. Check if DefaultTextStyle's textAlign is being respected or overridden. Run the provided code snippet in a Flutter project to reproduce the issue, then examine the widget tree and alignment logic. The fix likely involves modifying the AnimatedTextKit or its animated text widgets to properly pass textAlign.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.