feat: update to latest schemas from the Nu HTML Checker

[rdeltour]

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Add plaintext-only value to contenteditable attribute

validator/validator@228ea687b

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add warnings for deprecated ARIA attributes (#1560)

validator/validator@e61fbeb2c

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disallow aria attributes on datalist (#1557)

validator/validator@b4849c04b

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allow role=button on area

validator/validator@89ff1fc2b

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fix: allow -1 for aria-colcount

validator/validator@2466e73c4

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fix: Allow -1 for aria-rowcount

validator/validator@eac205b6b

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Add fetchpriority attribute

validator/validator@7c9991405

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Script type importmap (#1478)

validator/validator@4054c56f5

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Move “manifest” attribute to legacy-attributes list

validator/validator@175e62d3a

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Pointer Events (#1481)

validator/validator@5eb52a931

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Report a better error message for obsolete “manifest” attribute

validator/validator@ae924b625

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onscrollend

validator/validator@87287a97f

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slot element

validator/validator@d6cf423c1

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Allow paragraphs in hgroup (#1467)

validator/validator@3ff53973f

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blocking="render" (#1466)

validator/validator@df5d4e23a

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inert

validator/validator@507f551b2

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hidden=until-found

validator/validator@a424d55a8

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media attribute in meta element

validator/validator@af3e94d22

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Sync event handlers

validator/validator@58bea51c7

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Remove manifest attribute

validator/validator@66510f3ca

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enterkeyhint

validator/validator@70f3044d7

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Form method dialog (#1443)

validator/validator@0db229a44

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imagesrcset and imagesizes in link (#1444)

validator/validator@49656dbfc

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feat: add support width and height of source in picture

validator/validator@176d98e4f

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Update: allow none/presentation on nav element (#1323)

validator/validator@5e25edb39

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Update schema/html5/web-forms.rnc

validator/validator@95ba6c7cf

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update role allowances for button and input type=button

validator/validator@6cc14c4d7

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adds role=radio alowance to img alt=foo

validator/validator@b013aa02b

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remove deprecated dpub role allowances

validator/validator@b0fb152c0

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allow section element to have role=group

validator/validator@078341d37

[rdeltour]

@mattgarrish, I'd like your input on this one.

This new round of update includes validator/validator@cf03b5a, which removed doc-endnote and doc-biblioentry as allowed roles on li (apparently I didn't in fact update the schema since earlier, my bad).

While I understand the reason for the HTML checker, raising an error sound a bit drastic for EPUBCheck. I'm considering re-adding the roles to our version of the schema and raising a bespoke warning instead. WDYT?

[mattgarrish]

raising an error sound a bit drastic for EPUBCheck

Ya, it's not like using the roles really breaks anything. The inheritance model they break is a technical spec issue not a real problem that affects AT.

They shouldn't be used anymore, but 1.1 isn't even a REC yet. A warning sounds better than an error.

[mattgarrish]

The test to catch the roles is a bit limited. It only checks for the roles on li instead of all elements that accept any role. Because you can have <div role="list">, for example, you can have <div role="doc-endnote"> as a child of it. (See example 18 in the 1.0 spec.)

[rdeltour]

Yeah I know. That was more or less intentional, as I think this is not used a lot and the HTML validator does not catch these either.
But adding a naive fix (parent/child only) in Schematron should be straightforward.

[rdeltour]

But adding a naive fix (parent/child only) in Schematron should be straightforward.

Or maybe even simpler: shouldn't a warning be raised whenever one of these deprecated role is used, regardless of the semantic of the holding element and ancestor?

[mattgarrish]

shouldn't a warning be raised whenever one of these deprecated role is used, regardless of the semantic of the holding element and ancestor?

Yes, I wouldn't worry about whether there's a list ancestor or not, or what roles the element should accept. That's kind of moot. If any element has a role attribute with doc-endnote or doc-biblioentry, it should raise a warning.

[rdeltour]

Done.