Fix unpacking of custom entities in CaseBuilderWindow to ignore unused variable

Author: dylan-mp4

src/ui/case_builder_window.py

@@ -208,7 +208,7 @@ def save_case(self):
                                         case_data["fields"].append({"label": label, "value": text})
 
                 # Save custom entities
-                for name_edit, value_edit, _ in current_tab.custom_entities:
+                for name_edit, value_edit, *_ in current_tab.custom_entities:
                     name = name_edit.text()
                     value = value_edit.text()
                     if name and value: