Fix ConfigInitialNode certificate SAN generation (#75622)

CertGenUtils#createCommonName already returns a GeneralName of
type other, we should not by wrapping it in another GeneralName
of type other. Generated certificates are mangled and implementations
assume that there are no SANs present.

x-pack/plugin/security/cli/src/main/java/org/elasticsearch/xpack/security/cli/ConfigInitialNode.java

@@ -434,7 +434,7 @@ public class ConfigInitialNode extends EnvironmentAwareCommand {
             }
         }
         // this is the unequivocal, non-standard, mark for a cert generated by this auto-config process
-        generalNameSet.add(new GeneralName(GeneralName.otherName, CertGenUtils.createCommonName(ConfigInitialNode.class.getName())));
+        generalNameSet.add(CertGenUtils.createCommonName(ConfigInitialNode.class.getName()));
         return new GeneralNames(generalNameSet.toArray(new GeneralName[0]));
     }