fix: Fix the ratio task bug

Author: hefanli

runtime/datamate-python/app/module/ratio/service/ratio_task.py

@@ -294,7 +294,7 @@ def _filter_file(file: DatasetFiles, conditions: FilterCondition) -> bool:
                 for tag in all_tags:
                     if conditions.label.label and tag.get("label") != conditions.label.label:
                         continue
-                    if conditions.label.value is not None:
+                    if conditions.label.value is None:
                         return True
                     if tag.get("value") == conditions.label.value:
                         return True