Fix bug in ExtractElements recipe adding a lot unrelated products

if you'd add a type product and it had material that were used in bunch of ther products
example - https://community.osarch.org/discussion/1965/error-extracting-ifcslab-or-ifccolumn

src/ifcopenshell-python/ifcopenshell/api/project/append_asset.py

@@ -261,6 +261,8 @@ class Usecase:
             return True
         elif self.target_class == "IfcProduct" and element.is_a("IfcTypeProduct"):
             return True
+        elif self.target_class == "IfcTypeProduct" and element.is_a("IfcProduct"):
+            return True
         return False
 
     def reuse_existing_contexts(self):