[refactor](create tablet) default create tablet round robin (#28911)

fe/fe-common/src/main/java/org/apache/doris/common/Config.java

@@ -2075,7 +2075,13 @@ public class Config extends ConfigBase {
     public static boolean skip_localhost_auth_check  = true;
 
     @ConfField(mutable = true)
-    public static boolean enable_round_robin_create_tablet = false;
+    public static boolean enable_round_robin_create_tablet = true;
+
+    @ConfField(mutable = true, masterOnly = true, description = {
+            "创建分区时，总是从第一个 BE 开始创建。注意：这种方式可能造成BE不均衡",
+            "When creating tablet of a partition, always start from the first BE. "
+                    + "Note: This method may cause BE imbalance"})
+    public static boolean create_tablet_round_robin_from_start = false;
 
     /**
      * To prevent different types (V1, V2, V3) of behavioral inconsistencies,