fix: specifically check for None data amd accept data == 0

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: DamienGilliard

src/gh/components/DF_csv_exporter/code.py

@@ -198,7 +198,7 @@ def RunScript(self,
                     dist_err_list = []
                     rot_err_list = []
                     for data in assembly_dist_err_hist[i]:
-                        if data :
+                        if data is not None:
                             dist_err_list.append(float(data))
                         else:
                             dist_err_list.append("nan")