[80_6] Improving Radical Box Typesetting

[KeShih]

What

Improving Fraction Box Typesetting.

Why

For some opentype math font, math table gives more precise information about typesetting radical.

How to test your changes?

Open devel/80_6.tmu.

It is evident that the Asana Math and Fira Math opentype fonts have undergone changes, with significant adjustments in the spacing and positioning before and after the degree symbol. In contrast, the latter two hardcoded opentype fonts have remained unchanged.

Before:

After:

[da-liii]

The rule of the radical box rendered in Fira Math font should be fixed