markdown_preview: Fix preview not rendering bullet points beginning with HTML (#27018)

Closes #26631

Release Notes:

- Fixed markdown preview not rendering bullet points beginning with HTML

Before:
<img width="822" alt="before"
src="https://github.com/user-attachments/assets/102a7eac-fcc2-457b-9587-4a021800841d"
/>


After:
<img width="822" alt="after"
src="https://github.com/user-attachments/assets/8544b318-0efa-46c3-bd9b-c6c21444fab7"
/>

Note: I thought it would make sense to return `true` in `is_text_like`
for `Event::InlineMath` and `Event::DisplayMath` as well, but it looks
like rendering inline math is not supported at all at the moment:


4402e033a4/crates/markdown/src/parser.rs (L108)

crates/markdown_preview/src/markdown_parser.rs

@@ -100,6 +100,7 @@ impl<'a> MarkdownParser<'a> {
             // Represent an inline code block
             | Event::Code(_)
             | Event::Html(_)
+            | Event::InlineHtml(_)
             | Event::FootnoteReference(_)
             | Event::Start(Tag::Link { .. })
             | Event::Start(Tag::Emphasis)