BE: RBAC: Fix unknown resource exception (#4033)

kafka-ui-api/src/main/java/com/provectus/kafka/ui/model/rbac/Permission.java

@@ -16,6 +16,7 @@ import com.provectus.kafka.ui.model.rbac.permission.KsqlAction;
 import com.provectus.kafka.ui.model.rbac.permission.SchemaAction;
 import com.provectus.kafka.ui.model.rbac.permission.TopicAction;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.regex.Pattern;
 import javax.annotation.Nullable;
@@ -73,6 +74,10 @@ public class Permission {
   }
 
   private List<String> getAllActionValues() {
+    if (resource == null) {
+      return Collections.emptyList();
+    }
+
     return switch (this.resource) {
       case APPLICATIONCONFIG -> Arrays.stream(ApplicationConfigAction.values()).map(Enum::toString).toList();
       case CLUSTERCONFIG -> Arrays.stream(ClusterConfigAction.values()).map(Enum::toString).toList();