R1:0f27cd46ccad

Never render "Show More Context" inside an inline comment suggestion diff

Summary:
See PHI1896. If you do this:

- Create an inline comment over a wide range of lines.
- Suggest an edit.
- Make a change near the beginning of the block.
- Make a change near the end of the block.
- Save the inline.

...you get a rendering which includes a "Show More Context" fold in the middle.

Currently, this element renders in a visually broken way and consumes too many columns.

However, this element isn't…