feat: adding the wcag131 tag to the aria-hidden-body rule (#4349)

<< Describe the changes >>
This PR adds the `wcag412` tag to the aria-hidden-body rule, making it
easier for the testing engine to detect issues.

Closes #4315

---------

Signed-off-by: Christine <shecoder30@gmail.com>
Co-authored-by: Wilco Fiers <WilcoFiers@users.noreply.github.com>

Author: CBID2

doc/rule-descriptions.md

@@ -22,7 +22,7 @@
 | [aria-command-name](https://dequeuniversity.com/rules/axe/4.8/aria-command-name?application=RuleDescription)                     | Ensures every ARIA button, link and menuitem has an accessible name                                                                                   | Serious  | cat.aria, wcag2a, wcag412, TTv5, TT6.a, EN-301-549, EN-9.4.1.2, ACT                                                                | failure, needs review | [97a4e1](https://act-rules.github.io/rules/97a4e1)                                                                                                                                                                                                                 |
 | [aria-conditional-attr](https://dequeuniversity.com/rules/axe/4.8/aria-conditional-attr?application=RuleDescription)             | Ensures ARIA attributes are used as described in the specification of the element's role                                                         | Serious  | cat.aria, wcag2a, wcag412, EN-301-549, EN-9.4.1.2                                                                                  | failure                    | [5c01ea](https://act-rules.github.io/rules/5c01ea)                                                                                                                                                                                                                 |
 | [aria-deprecated-role](https://dequeuniversity.com/rules/axe/4.8/aria-deprecated-role?application=RuleDescription)               | Ensures elements do not use deprecated roles                                                                                                          | Minor    | cat.aria, wcag2a, wcag412, EN-301-549, EN-9.4.1.2                                                                                  | failure                    | [674b10](https://act-rules.github.io/rules/674b10)                                                                                                                                                                                                                 |
-| [aria-hidden-body](https://dequeuniversity.com/rules/axe/4.8/aria-hidden-body?application=RuleDescription)                       | Ensures aria-hidden="true" is not present on the document body.                                                                             | Critical | cat.aria, wcag2a, wcag412, EN-301-549, EN-9.4.1.2                                                                                  | failure                    |                                                                                                                                                                                                                                                                    |
+| [aria-hidden-body](https://dequeuniversity.com/rules/axe/4.8/aria-hidden-body?application=RuleDescription)                       | Ensures aria-hidden="true" is not present on the document body.                                                                             | Critical | cat.aria, wcag2a, wcag131, wcag412, EN-301-549, EN-9.4.1.2                                                                         | failure                    |                                                                                                                                                                                                                                                                    |
 | [aria-hidden-focus](https://dequeuniversity.com/rules/axe/4.8/aria-hidden-focus?application=RuleDescription)                     | Ensures aria-hidden elements are not focusable nor contain focusable elements                                                                         | Serious  | cat.name-role-value, wcag2a, wcag412, TTv5, TT6.a, EN-301-549, EN-9.4.1.2                                                          | failure, needs review | [6cfa84](https://act-rules.github.io/rules/6cfa84)                                                                                                                                                                                                                 |
 | [aria-input-field-name](https://dequeuniversity.com/rules/axe/4.8/aria-input-field-name?application=RuleDescription)             | Ensures every ARIA input field has an accessible name                                                                                                 | Serious  | cat.aria, wcag2a, wcag412, TTv5, TT5.c, EN-301-549, EN-9.4.1.2, ACT                                                                | failure, needs review | [e086e5](https://act-rules.github.io/rules/e086e5)                                                                                                                                                                                                                 |
 | [aria-meter-name](https://dequeuniversity.com/rules/axe/4.8/aria-meter-name?application=RuleDescription)                         | Ensures every ARIA meter node has an accessible name                                                                                                  | Serious  | cat.aria, wcag2a, wcag111, EN-301-549, EN-9.1.1.1                                                                                  | failure, needs review |                                                                                                                                                                                                                                                                    |

lib/rules/aria-hidden-body.json

@@ -4,7 +4,15 @@
   "selector": "body",
   "excludeHidden": false,
   "matches": "is-initiator-matches",
-  "tags": ["cat.aria", "wcag2a", "wcag412", "EN-301-549", "EN-9.4.1.2"],
+  "tags": [
+    "cat.aria",
+    "wcag2a",
+    "wcag131",
+    "wcag412",
+    "EN-301-549",
+    "EN-9.1.3.1",
+    "EN-9.4.1.2"
+  ],
   "metadata": {
     "description": "Ensures aria-hidden=\"true\" is not present on the document body.",
     "help": "aria-hidden=\"true\" must not be present on the document body"