LibWeb: AnchorElement should be focusable with tabindex

Author: https://github.com/lpas
Commit: 8ca59e7c7e
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6780
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/HTML/HTMLAnchorElement.h

@@ -31,7 +31,7 @@ public:
 
     // ^EventTarget
     // https://html.spec.whatwg.org/multipage/interaction.html#the-tabindex-attribute:the-a-element
-    virtual bool is_focusable() const override { return has_attribute(HTML::AttributeNames::href); }
+    virtual bool is_focusable() const override { return Base::is_focusable() || has_attribute(HTML::AttributeNames::href); }
 
     virtual bool is_html_anchor_element() const override { return true; }