fix: RSS alternate link tag does not expose release/vuln feeds (#6562)

* fix: RSS alternate link tag does not expose release/vuln feeds

* chore: Replace with baseUrlAndPath instead

* chore: Update regex to match blog and use local to get url

Author: thisalihassan

next.dynamic.mjs

@@ -212,6 +212,25 @@ const getDynamicRouter = async () => {
       path
     );
 
+    const blogMatch = path.match(/^blog\/(release|vulnerability)(\/|$)/);
+    if (blogMatch) {
+      const category = blogMatch[1];
+      const currentFile = siteConfig.rssFeeds.find(
+        item => item.category === category
+      )?.file;
+      // Use getUrlForPathname to dynamically construct the XML path for blog/release and blog/vulnerability
+      pageMetadata.alternates.types['application/rss+xml'] = getUrlForPathname(
+        locale,
+        `feed/${currentFile}`
+      );
+    } else {
+      // Use getUrlForPathname for the default blog XML feed path
+      pageMetadata.alternates.types['application/rss+xml'] = getUrlForPathname(
+        locale,
+        'feed/blog.xml'
+      );
+    }
+
     availableLocaleCodes.forEach(currentLocale => {
       pageMetadata.alternates.languages[currentLocale] = getUrlForPathname(
         currentLocale,