fix: error on modals missing focusable elements

src/renderer/composables/useFocusTrap.ts

@@ -60,12 +60,15 @@ const useFocusTrap = (args?: {disableAutofocus?: boolean}) => {
       focusableElements = (trapRef.value as HTMLElement).querySelectorAll(
          focusableElementsSelector
       );
+
+      if (focusableElements.length) {
          $firstFocusable = focusableElements[0];
          $lastFocusable = focusableElements[focusableElements.length - 1];
          document.addEventListener('keydown', keyHandler);
          isInitiated.value = true;
          if (!localArgs.disableAutofocus) $firstFocusable.focus();
       }
+   }
 
    function clearFocusTrap () {
       document.removeEventListener('keydown', keyHandler);