collapsed sections with footnotes not rendering

[samheckle]

issue: footnotes don't render within the HTML <detail> tags

as per github collapsed docs

here is my markdown:

<details>
<summary> toggle 1 </summary>

definition with footnote[^1]

</details>

<details>
<summary> toggle 2 </summary>

definition with a footnote[^2]

</details>

[^1]: this displays as plaintext
[^2]: this also displays as plaintext

here is the output in vs code markdown preview:

the expected functionality should look like this:

toggle 1

definition with footnote¹

toggle 2

definition with a footnote²

Footnotes

1. footnote 1 ↩

2. footnote 2 ↩

[DSGeoff]

This isn't specific to collapsed sections. Footnotes, in general, don't display the same as in Github. Although, perhaps there is something extra that needs to happen when they're inside collapsed sections.