Tweak device on_network property handling for the active coordinator (#…

…22)

zha/zigbee/device.py

@@ -401,7 +401,7 @@ def device_automation_triggers(self) -> dict[tuple[str, str], dict[str, str]]:
  @property
  def available(self):
  """Return True if device is available."""
- return self._available and self._on_network
+ return self._available and self.on_network
 
  @available.setter
  def available(self, new_availability: bool) -> None:
@@ -411,7 +411,7 @@ def available(self, new_availability: bool) -> None:
  @property
  def on_network(self):
  """Return True if device is currently on the network."""
- return self._on_network
+ return self.is_active_coordinator or self._on_network
 
  @on_network.setter
  def on_network(self, new_on_network: bool) -> None: