[TASK] Use modern HTML syntax for boolean attributes#1234

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billdagou:non-breaking

Commits on Sep 15, 2025

Behavior changes for `NULL`, `TRUE` and `FALSE`, and HTML5 support in rendering result.

billdagou
authored and
s2b
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Rename `isXHtml` to `requireAttributeValues`

billdagou
authored and
s2b
committed
Non-breaking task for adjusted markup for `true` and `false`

billdagou
authored and
s2b
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