长轮询参数校验逻辑，修复不存在的空命名空间配置校验失败bug (#11442)

config/src/main/java/com/alibaba/nacos/config/server/paramcheck/ConfigListenerHttpParamExtractor.java

@@ -59,7 +59,7 @@ public class ConfigListenerHttpParamExtractor extends AbstractHttpParamExtractor
         for (String line : lines) {
             ParamInfo paramInfo = new ParamInfo();
             String[] words = line.split(Character.toString(WORD_SEPARATOR_CHAR));
-            if (words.length < 3 || words.length > 4) {
+            if (words.length < 2 || words.length > 4) {
                 throw new IllegalArgumentException("invalid probeModify");
             }
             paramInfo.setDataId(words[0]);