[feat] Support for Legacy XHTML-MP (WAP 1.0) Syntax

[devvaannsh]

Describe the problem

I'm currently working on a website for old computers and cellphones. The mobile site is using the WAPFORUM/DTD XHTML Mobile 1.0 Doctype, which requires end tags like and , along with deprecated attributes like align="middle".

Describe the solution you'd like

It'd be awesome if there'd be a legacy XHTML-MP setting. Or at least if it's possible to ignore these HTML problems.

Alternatives considered

No response

Additional context

No response