Use native value instead of _attr_state

custom_components/feedparser/sensor.py

@@ -116,7 +116,7 @@ def update(self: FeedParserSensor) -> None:
         )
         self._entries = []
 
-        for entry in parsed_feed.entries[: self._attr_state]:
+        for entry in parsed_feed.entries[: self.native_value]:  # type: ignore[misc]
             entry_value = {}
 
             for key, value in entry.items():