fix selected being negative

Author: chiefcll

src/primitives/utils/handleNavigation.ts

@@ -182,7 +182,11 @@ export function moveSelection(
   el: lngp.NavigableElement,
   delta: number,
 ): boolean {
-  let selected = findFirstFocusableChildIdx(el, el.selected + delta, delta);
+  let selected = findFirstFocusableChildIdx(
+    el,
+    Math.max(0, el.selected + delta),
+    delta,
+  );
 
   if (selected === -1) {
     if (