Method focusNext

core/src/components/input-otp/input-otp.tsx:457–462

* Focuses the next input box.

(currentIndex: number)

   * Focuses the next input box.
   */
  private focusNext(currentIndex: number) {
    const { inputRefs, length } = this;
    if (currentIndex < length - 1) {
      inputRefs[currentIndex + 1]?.focus();
    }
  }

  /**
   * Focuses the previous input box.