Checkboxes disappear on empty line

[kokoISnoTarget]

- [ ] Some option
 
- [x] Wow, the checks disappear

Appears like this in 4.2:

[CosmicHorrorDev]

Can reproduce on main 👍

Looks like it's probably a bug in the interpreter, since adding that text as an interpreter test gets this

Snapshot: interpreter__tests__checklist_with_gap
Source: src/interpreter/tests.rs:374
─────────────────────────────────────────────────────────────────────────────────
Expression: interpret_md_with_opts(text, opts)
─────────────────────────────────────────────────────────────────────────────────
 --- md

- [ ] Some option

- [x] Wow, the checks disappear


 --- html

<ul>
<li><input type="checkbox" disabled="" />
<p>Some option</p>
</li>
<li><input type="checkbox" checked="" disabled="" />
<p>Wow, the checks disappear</p>
</li>
</ul>

─────────────────────────────────────────────────────────────────────────────────
Snapshot Contents:
──────┬──────────────────────────────────────────────────────────────────────────
    1 │ [
    2 │     TextBox(
    3 │         TextBox {
    4 │             indent: 50.0,
    5 │             texts: [
    6 │                 Text {
    7 │                     text: "Some option",
    8 │                     default_color: Color(BLACK),
    9 │                     ..
   10 │                 },
   11 │             ],
   12 │             ..
   13 │         },
   14 │     ),
   15 │     Spacer(
   16 │         InvisibleSpacer(5),
   17 │     ),
   18 │     TextBox(
   19 │         TextBox {
   20 │             indent: 50.0,
   21 │             texts: [
   22 │                 Text {
   23 │                     text: "Wow, the checks disappear",
   24 │                     default_color: Color(BLACK),
   25 │                     ..
   26 │                 },
   27 │             ],
   28 │             ..
   29 │         },
   30 │     ),
   31 │     Spacer(
   32 │         InvisibleSpacer(5),
   33 │     ),
   34 │     Spacer(
   35 │         InvisibleSpacer(5),
   36 │     ),
   37 │ ]
──────┴──────────────────────────────────────────────────────────────────────────

So the HTML shows that it considers it to be one list with two checkboxes, but the interpreter returns it as two indented text boxes instead of having a checkbox prefix

[kokoISnoTarget]

It looks like that an li cant contain anything else than bare text

- [ ] Some text
- [ ] <h1>Test</h1>
- [ ] <p>Test</p>
- [ ] <img src="example.png">

And the newline adds an p tag in the HTML