It is used to eliminate duplicate roles in the User Roles table and prevent future duplicates.

Helps manage user groups and roles to protect information through role-based access controls. Efficiently consolidates duplicate entries for inherited roles.

More info here:

https://docs.servicenow.com/bundle/paris-platform-administration/page/administer/roles/task/Role-Mgmt-V2-Upgrade.html

More about the process checking the files from the plugins:

<>.service-now.com/v_plugin_list.do?sysparm_query=idSTARTSWITHcom.glide.role_management.inh_count&sysparm_first_row=1&sysparm_view=&sysparm_choice_query_raw=&sysparm_list_header_search=true 

 Please mark as helpful and/or correct if this helps you