Chinese characters cannot be displayed on the web

### What happened?

Hi guys,
I am testing Flame's performance on the web.

When I use TextComponent and then run `flutter build web`, Chinese characters do not display, but English characters do.

You can see the demo here: [Flame Spine Demo](https://flame-spine-demo.zeabur.app/)
The code is available here: [GitHub Repository](https://github.com/chrislitw/flame_spine_demo)

Thank you all for your help.

### What do you expect?

Show Chinese characters.

### How can we reproduce this?

_No response_

### What steps should take to fix this?

_No response_

### Do have an example of where the bug occurs?

_No response_

### Relevant log output

_No response_

### Execute in a terminal and put output into the code block below

Output of: flutter doctor -v

### Affected platforms

Web

### Other information

_No response_

### Are you interested in working on a PR for this?

- [ ] I want to work on this