Implement backend code review changes

* Implement code review changes from
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25300

That MR was abandoned in favor of
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/25407

changelogs/unreleased/fix-broken-license-policy-page.yml

----
-title: Fix broken license policy page
-merge_request: 25300
-author:
-type: fixed

ee/app/controllers/projects/licenses_controller.rb

@@ -87,7 +87,7 @@ module Projects
 
     def write_license_policies_endpoint
       if can?(current_user, :admin_software_license_policy, @project)
-        api_v4_projects_managed_licenses_path(id: @project.id)
+        expose_path(api_v4_projects_managed_licenses_path(id: @project.id))
       else
         ''
       end
@@ -96,7 +96,7 @@ module Projects
     def licenses_app_data
       {
         project_licenses_endpoint: project_licenses_path(@project, detected: true, format: :json),
-          read_license_policies_endpoint: api_v4_projects_managed_licenses_path(id: @project.id),
+        read_license_policies_endpoint: expose_path(api_v4_projects_managed_licenses_path(id: @project.id)),
         write_license_policies_endpoint: write_license_policies_endpoint,
         documentation_path: help_page_path('user/application_security/license_compliance/index'),
         empty_state_svg_path: helpers.image_path('illustrations/Dependency-list-empty-state.svg')