improve type hints with entitysdk types

Author: AurelienJaquier

obi_one/scientific/tasks/ion_channel_modeling.py

@@ -455,10 +455,10 @@ def create_campaign_generation_entity(
 class IonChannelFittingSingleConfig(IonChannelFittingScanConfig, SingleConfigMixin):
     """Only allows single values and ensures nested attributes follow the same rule."""
 
-    _single_entity: Any
+    _single_entity: entitysdk.models.IonChannelModelingConfig
 
     @property
-    def single_entity(self) -> Any:
+    def single_entity(self) -> entitysdk.models.IonChannelModelingConfig:
         return self._single_entity
 
     def create_single_entity_with_config(