fix(csa-362): add log line to confirm IdentityEndpoint bulk resolution is active

Author: bladata1990

samples/packages/admin-export/src/main/kotlin/com/atlan/pkg/ae/exports/Users.kt

@@ -55,6 +55,7 @@ class Users(
         logger.info { "Fetched ${allUsers.size} users. Resolving group memberships via IAM API..." }
 
         // Bulk-fetch group memberships — ~120 Redis calls instead of 60K Keycloak calls
+        logger.info { "Resolving group memberships via IdentityEndpoint (bulk IAM API)..." }
         val userGroupsMap = ctx.client.identity.getUserGroups(allUsers.mapNotNull { it.id })
 
         // Collect all unique group IDs seen across all users, then resolve aliases in bulk