Search functionality for unassigned trigger.

At present, we are required to manually inspect each page and layer for any unassigned triggers, which is a labor-intensive process and prone to oversight. This method is not only time-consuming but also increases the likelihood that some unassigned triggers may go unnoticed. There are instances when triggers remain unassigned due to various reasons, such as moving or reusing slides, or other operational factors. This can lead to significant functionality errors, which could impact the overall performance. To streamline this process and reduce the risk of errors, it would be highly advantageous to implement a search functionality specifically designed to identify and highlight unassigned triggers.