HTML tag navigation does not understand optional tags in hierarchy

[Artoria2e5]

Does this issue occur when all extensions are disabled?: Yes

• VS Code Version: 1.57.1
• OS Version: macOS 11.4

Steps to Reproduce:

1. Open https://github.com/Artoria2e5/fc712/blob/main/css-hw/index.html in VSCode
2. Navigate to the part that says "don't need them!"
3. Observe the navigation at the top
4. For fun, go to the table and observe its navigation

Expected behavior:

p > a

Actual behavior:

Notes:

• VSCode does try to avoid this issue from happening at all by suggesting closing tags. But I really don't want them, especially on a chain of tds.
• Using <section>...</section> could be a workaround. But this is still a bug!
• I am open to any extension suggestions for formatting this sort of code too :)

[aeschli]

duplicated of microsoft/vscode-html-languageservice#63