Unable to Add Filter Based on Custom Field for Contact Subpanel under Account Object?

Summary:

Unable to Add Filter Based on Custom Field for Contact Subpanel under Account Object?

Content (please ensure you mask any confidential information):

My client wants users to view only Contact records in the Account based on a custom field. However, the subpanel uses the AccountContact API/object (not available in Application Composer) ,

Therefore, we cannot add any custom fields, and this API has a limitation—it only exposes a limited set of Contact fields.

Code Snippet (add any code snippets that support your topic, if applicable):