fix template mapping for task attrs that are falsy

src/engine/src/helpers/TemplateMapper.py

@@ -61,8 +61,13 @@ def map(self, obj: Union[Pipeline, Task], uses: Uses) -> Union[Pipeline, Task]:
             if attr == "type":
                 dict_obj["type"] = template.get(attr)
                 continue
-
-            if getattr(obj, attr, None) == None:
+
+            # Add the template's value for this attribute if the original object's
+            # value is not None, or if the object's og value is falsy and the templates value is not
+            if (
+                getattr(obj, attr, None) in [[], {}, "", None]
+                and template[attr] not in [[], {}, "", None]
+            ):
                 dict_obj[attr] = template[attr]
 
         # Create a new object out of the modified dict representation of the original object