Fix Issues: more and more Wrap are added every time the mouse is moved.

[rustbasic]

Fix Issues: more and more Wrap are added every time the mouse is moved.

• Related Fix text sometime line-breaking or truncating too early #5077
• Related If the contents of the popup window are incorrectly wrapped, it will continue to be displayed incorrectly wrapped. #5079
• Closes #5077 After update, more and more Wrap are added every time the mouse is moved. #5084

Using floor() will cause the value of wrap.max_width to keep getting smaller.
You should use round() or ceil() to prevent the value of wrap.max_width from getting smaller.