Superscript and subscript in Display styles still has design features of text styles

[TaigaYamada]

Describe the bug
In the latest 4.0 beta (4.0-beta9f), superscript and subscript in Display styles still has design features of text styles.
Most obviously, they have angular stroke terminals.

To Reproduce
Steps to reproduce the behavior:

1. Open any app that renders text
2. Set the font to Inter Variable and set the optical size to maximum (28)
3. Type in a sequence of characters that includes superscript and subscript, like "ᵗt aₐ eᵉ"

Expected behavior
Letter shapes for superscript and subscript should reflect the display style design features too, such as stroke terminals being angled at 90 degrees.

Screenshots

Environment

• OS: Windows 11
• Adobe Illustrator 27.5 (Latest at the time of the report)
• Inter 4.0-beta9f

[rsms]

I think it will have to remain so for version 4.0 or it might never ship :-P