Pin guidelines/* content when publishing 2.2 docs to w3.org (#4161)

This applies the same publication-version-pinning logic added in #4007
for 2.1 docs, to 2.2 docs specifically when built for w3.org, so that
guideline/SC and definition text included within informative docs
matches the published recommendation. Local dev and gh-pages builds
continue to run against `guidelines` in the local repository
(effectively the Editor's Draft).

The build uses the published recommendation whenever `WCAG_VERSION` is
specified, so enabling this for w3.org builds only requires adding that
environment variable explicitly to the `publish-w3c` script.

The changes to `11ty/guidelines.ts` fix cases that were never exhibited
in the 2.1 build, but came up when testing building 2.2 against the
published recommendation.

11ty/guidelines.ts

@@ -247,6 +247,15 @@ const loadRemoteGuidelines = async (version: WcagVersion) => {
     $("[role='note'] .marker").remove();
     $("[role='note']").find("> div, > p").addClass("note").unwrap();
 
+    // Convert data-plurals (present in publications) to data-lt
+    $("dfn[data-plurals]").each((_, el) => {
+      el.attribs["data-lt"] = (el.attribs["data-lt"] || "")
+        .split("|")
+        .concat(el.attribs["data-plurals"].split("|"))
+        .join("|");
+      delete el.attribs["data-plurals"];
+    });
+
     // Un-process bibliography references, to be processed by CustomLiquid
     $("cite:has(a.bibref:only-child)").each((_, el) => {
       const $el = $(el);
@@ -255,7 +264,7 @@ const loadRemoteGuidelines = async (version: WcagVersion) => {
 
     // Remove generated IDs and markers from examples
     $(".example[id]").removeAttr("id");
-    $(".example .marker:has(.self-link)").remove();
+    $(".example > .marker").remove();
 
     // Remove extra markup from headings so they can be parsed for names
     $("bdi").remove();

package.json

@@ -8,7 +8,7 @@
     "build": "tsx node_modules/@11ty/eleventy/cmd.cjs --config=eleventy.config.ts",
     "check": "tsc",
     "fmt": "prettier . -w",
-    "publish-w3c": "WCAG_MODE=publication npm run build && tsx 11ty/cp-cvs.ts",
+    "publish-w3c": "WCAG_VERSION=22 WCAG_MODE=publication npm run build && tsx 11ty/cp-cvs.ts",
     "publish-w3c:21": "WCAG_VERSION=21 WCAG_MODE=publication npm run build && WCAG_VERSION=21 tsx 11ty/cp-cvs.ts",
     "start": "tsx watch node_modules/@11ty/eleventy/cmd.cjs --config=eleventy.config.ts --serve --incremental"
   },