Experimental factors' units don't show up in downloaded template

E.g. Temperature unit is specified as degree Celsius in the Designer but it is not displayed in the downloaded template (as opposed to Result variables' units (row2 on corresponding sheet).

<img width="604" height="346" alt="Image" src="https://github.com/user-attachments/assets/cabd4385-7e08-4386-b0f0-f37b4e36f6c2" />