klippy_connection: fix regression in state reporting

Moonraker should only force the state to report as "startup"
when Klippy is connected and it hasn't detected a transition
to startup.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

moonraker/klippy_connection.py

@@ -100,7 +100,7 @@ class KlippyConnection:
 
     @property
     def state(self) -> str:
-        if not self._klippy_started:
+        if self.is_connected() and not self._klippy_started:
             return "startup"
         return self._state