docs: default version selector to Cloud (Latest) (#2703)

Set select.value to the resolved current version after populating the
options so the correct entry stays selected.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

Author: claudiacodacy

docs/assets/javascripts/version-select.js

@@ -206,6 +206,7 @@ function initializeVersionSelector() {
         }), currentVersion.version);
         selector.replaceChildren.apply(selector, Array.prototype.slice.call(generatedSelect.options));
         var select = selector;
+        select.value = currentVersion.version;
         select.disabled = false;
 
         // Navigate to the selected version