fix update store_col_cnt when upgrade

src/storage/ob_storage_schema.cpp

@@ -993,5 +993,11 @@ void ObStorageSchema::reset_string(ObString &str)
   str.reset();
 }
 
+void ObStorageSchema::update_column_cnt(const int64_t input_col_cnt)
+{
+  column_cnt_ = MAX(column_cnt_, input_col_cnt);
+  store_column_cnt_ = MAX(store_column_cnt_, input_col_cnt);
+}
+
 } // namespace storage
 } // namespace oceanbase