[feature](pipelineX) support paritition tablet sink shuffle (#31689)

fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java

@@ -860,7 +860,7 @@ public class SessionVariable implements Serializable, Writable {
     @VariableMgr.VarAttr(name = ENABLE_NEREIDS_DML_WITH_PIPELINE, needForward = true,
             varType = VariableAnnotation.EXPERIMENTAL,
             description = {"在新优化器中，使用pipeline引擎执行DML", "execute DML with pipeline engine in Nereids"})
-    public boolean enableNereidsDmlWithPipeline = false;
+    public boolean enableNereidsDmlWithPipeline = true;
 
     @VariableMgr.VarAttr(name = ENABLE_STRICT_CONSISTENCY_DML, needForward = true)
     public boolean enableStrictConsistencyDml = false;