[ISSUE #9723] Fix missing "+" symbol in metadata updates for v2 configuration (#9724)

Co-authored-by: cvictory <shengli.caosl@alibaba-inc.com>

Author: cvictory

broker/src/main/java/org/apache/rocketmq/broker/config/v2/SubscriptionGroupManagerV2.java

@@ -132,6 +132,7 @@ public void updateSubscriptionGroupConfig(final SubscriptionGroupConfig config)
         if (config == null || MixAll.isLmq(config.getGroupName())) {
             return;
         }
+        super.updateSubscriptionGroupConfigWithoutPersist(config);
         ByteBuf keyBuf = ConfigHelper.keyBufOf(TableId.SUBSCRIPTION_GROUP, config.getGroupName());
         ByteBuf valueBuf = ConfigHelper.valueBufOf(config, SerializationType.JSON);
         try (WriteBatch writeBatch = new WriteBatch()) {
@@ -147,7 +148,6 @@ public void updateSubscriptionGroupConfig(final SubscriptionGroupConfig config)
             keyBuf.release();
             valueBuf.release();
         }
-        super.updateSubscriptionGroupConfigWithoutPersist(config);
     }
 
     @Override