[enhancement](Nereids): add phase in shape string (#26682)

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/physical/PhysicalLimit.java

@@ -164,6 +164,11 @@ public class PhysicalLimit<CHILD_TYPE extends Plan> extends PhysicalUnary<CHILD_
         );
     }
 
+    @Override
+    public String shapeInfo() {
+        return this.getClass().getSimpleName() + "[" + phase + "]";
+    }
+
     @Override
     public List<Slot> computeOutput() {
         return child().getOutput();

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/physical/PhysicalQuickSort.java

@@ -99,6 +99,11 @@ public class PhysicalQuickSort<CHILD_TYPE extends Plan> extends AbstractPhysical
                 statistics, child());
     }
 
+    @Override
+    public String shapeInfo() {
+        return this.getClass().getSimpleName() + "[" + phase + "]";
+    }
+
     @Override
     public String toString() {
         return Utils.toSqlString("PhysicalQuickSort[" + id.asInt() + "]" + getGroupIdWithPrefix(),

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/physical/PhysicalTopN.java

@@ -147,6 +147,11 @@ public class PhysicalTopN<CHILD_TYPE extends Plan> extends AbstractPhysicalSort<
                 groupExpression, getLogicalProperties(), physicalProperties, statistics, child());
     }
 
+    @Override
+    public String shapeInfo() {
+        return this.getClass().getSimpleName() + "[" + phase + "]";
+    }
+
     @Override
     public String toString() {
         return Utils.toSqlString("PhysicalTopN[" + id.asInt() + "]" + getGroupIdWithPrefix(),