fix external links softlocking the ui in testing store cta

frontend/src/components/ExternalLink.tsx

@@ -0,0 +1,16 @@
+import { Navigation } from '@decky/ui';
+import { AnchorHTMLAttributes, FC } from 'react';
+
+const ExternalLink: FC<AnchorHTMLAttributes<HTMLAnchorElement>> = (props) => {
+  return (
+    <a
+      {...props}
+      onClick={(e) => {
+        e.preventDefault();
+        props.onClick ? props.onClick(e) : props.href && Navigation.NavigateToExternalWeb(props.href);
+      }}
+    />
+  );
+};
+
+export default ExternalLink;