Fix bug about prepareBath in MetricsPersistentWorker #5399 (#5401)

* bugfix: when extend the scope and recommend to start with 10000 or scope greater than 1000   , freemarker  generate MetricsMetaInfo method will cause error such as MetricsMetaInfo("xxxx_cpm", 10,001, entityId)
Co-authored-by: Njingjiu <jingjiu@tsign.cn>
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/analysis/worker/MetricsPersistentWorker.java

@@ -130,7 +130,7 @@ public class MetricsPersistentWorker extends PersistenceWorker<Metrics> {
          * Hard coded the max size. This is only the batch size of one metrics, too large number is meaningless.
          */
         int maxBatchGetSize = 2000;
-        final int batchSize = Math.max(maxBatchGetSize, lastCollection.size());
+        final int batchSize = Math.min(maxBatchGetSize, lastCollection.size());
         List<Metrics> metricsList = new ArrayList<>();
         for (Metrics data : lastCollection) {
             transWorker.ifPresent(metricsTransWorker -> metricsTransWorker.in(data));