refactor(template-no-abstract-roles): source abstract-role list from aria-query

Replaces a hand-maintained list of 12 abstract ARIA roles with a
derivation from aria-query's role taxonomy (role.abstract === true).

aria-query is already a dependency. Future WAI-ARIA additions of
abstract roles flow in automatically on aria-query upgrade instead of
requiring a hand edit here.

No behavioural change — the derived set is identical to the hand list
today.

Author: johanrd

lib/rules/template-no-abstract-roles.js

@@ -1,17 +1,11 @@
-const PROHIBITED_ROLE_VALUES = new Set([
-  'command',
-  'composite',
-  'input',
-  'landmark',
-  'range',
-  'roletype',
-  'section',
-  'sectionhead',
-  'select',
-  'structure',
-  'widget',
-  'window',
-]);
+const { roles } = require('aria-query');
+
+// Abstract ARIA roles, sourced from aria-query. Abstract roles exist only for
+// taxonomy — authors should never set role="widget" / "landmark" / etc.
+// https://www.w3.org/TR/wai-aria-1.2/#abstract_roles
+const PROHIBITED_ROLE_VALUES = new Set(
+  [...roles.keys()].filter((role) => roles.get(role).abstract)
+);
 
 /** @type {import('eslint').Rule.RuleModule} */
 module.exports = {