Logs: update panel state when clearing displayed fields (#97543)

Logs: set panel state when clearing displayed fields

public/app/features/explore/Logs/Logs.tsx

@@ -625,8 +625,12 @@ const UnthemedLogs: React.FunctionComponent<Props> = (props: Props) => {
   );
 
   const clearDetectedFields = useCallback(() => {
+    updatePanelState({
+      ...panelState?.logs,
+      displayedFields: [],
+    });
     setDisplayedFields([]);
-  }, []);
+  }, [panelState?.logs, updatePanelState]);
 
   const onCloseCallbackRef = useRef<() => void>(() => {});