[Fix](row store) Real default value should be used instead of default… (#25230)

Before this PR the default value is not correct, we should use default value in Frontend schema.

fe/fe-core/src/main/java/org/apache/doris/analysis/SlotDescriptor.java

@@ -304,6 +304,7 @@ public class SlotDescriptor {
             LOG.debug("column name:{}, column unique id:{}", column.getName(), column.getUniqueId());
             tSlotDescriptor.setColUniqueId(column.getUniqueId());
             tSlotDescriptor.setIsKey(column.isKey());
+            tSlotDescriptor.setColDefaultValue(column.getDefaultValue());
         }
         return tSlotDescriptor;
     }