[10] fix ignoring translation variables

VERSION

@@ -1 +1 @@
-1.18.2-develop9
+1.18.2-develop10

modules/meta.py

@@ -306,8 +306,8 @@ class DataFile:
                             conditionals[k] = v
 
                     language = variables["language"] if "language" in variables else "default"
-                    translation_variables = {k: v[language if language in v else "default"] for k, v in self.translations.items()}
-                    translation_variables.update({k: v[language if language in v else "default"] for k, v in self.translation_variables.items() if language in v or "default" in v})
+                    translation_variables = {k: v[language if language in v else "default"] for k, v in self.translations.items() if k not in optional}
+                    translation_variables.update({k: v[language if language in v else "default"] for k, v in self.translation_variables.items() if (language in v or "default" in v) and k not in optional})
                     key_name_variables = {}
                     for var_key, var_value in self.key_names.items():
                         if var_key == "library_type" and language in var_value: