fix: fix ConstColumn(String) cast to StringColumn bug

Author: lichuang

src/query/datavalues/src/columns/array/mod.rs

@@ -115,7 +115,7 @@ impl Column for ArrayColumn {
     }
 
     fn as_inner_any(&self) -> Option<&dyn std::any::Any> {
-        Some(self.values.as_any())
+        None
     }
 
     fn data_type(&self) -> DataTypeImpl {

src/query/datavalues/src/columns/const_/mod.rs

@@ -47,7 +47,7 @@ impl Column for ConstColumn {
     }
 
     fn as_inner_any(&self) -> Option<&dyn std::any::Any> {
-        Some(self.column.as_any())
+        Some(self.inner().as_any())
     }
 
     fn data_type(&self) -> DataTypeImpl {

src/query/datavalues/src/columns/nullable/mod.rs

@@ -95,7 +95,7 @@ impl Column for NullableColumn {
     }
 
     fn as_inner_any(&self) -> Option<&dyn std::any::Any> {
-        Some(self.column.as_any())
+        Some(self.inner().as_any())
     }
 
     fn data_type(&self) -> DataTypeImpl {