Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

The TextGrid widget cannot handle Chinese character correctly. The Chinese charaters will overlap each other.

How to reproduce

1. grid := widget.NewTextGrid()
2. grid.Append("[2024-01-01 10:00:00] INFO: 应用程序启动\n")

Screenshots

Example code

grid := widget.NewTextGrid()
grid.Append("[2024-01-01 10:00:00] INFO: 应用程序启动\n")

Fyne version

2.7.2

Go compiler version

1.25.5

Operating system and version

Windows 11

Additional Information

No response