Fix delivery of PEX root tmp dirs

• HeuristicProductFinder in delivery now no longer considers PEX root tmpdirs as products to deliver

apps/cli/executables/pexable/delivery/delivery/finder.py

@@ -44,9 +44,7 @@ class HeuristicProductFinder(ProductFinder):
         Identify the product type and the number of products and returns them as a list
 
         :return: List of products
-        TODO: Search for a `products` directory to identify calibration products; I think that's good enough for now
-            to tell EBs from calibrations and once we get more products needing to be delivered we can expand from there
         """
         for subdir in self.path.glob("*"):
-            if subdir.is_dir():
+            if subdir.is_dir() and not subdir.name.startswith("tmp"):
                 yield ExecutionBlock(subdir)