Fix bluetooth diagnostics on macos (#79680)

* Fix bluetooth diagnostics on macos

The pyobjc objects cannot be pickled which cases dataclasses
asdict to raise an exception when trying to do the deepcopy

We now implement our own as_dict to avoid this problem

* add cover

homeassistant/components/bluetooth/models.py

@@ -53,6 +53,25 @@ class BluetoothServiceInfoBleak(BluetoothServiceInfo):
     connectable: bool
     time: float
 
+    def as_dict(self) -> dict[str, Any]:
+        """Return as dict.
+
+        The dataclass asdict method is not used because
+        it will try to deepcopy pyobjc data which will fail.
+        """
+        return {
+            "name": self.name,
+            "address": self.address,
+            "rssi": self.rssi,
+            "manufacturer_data": self.manufacturer_data,
+            "service_data": self.service_data,
+            "service_uuids": self.service_uuids,
+            "source": self.source,
+            "advertisement": self.advertisement,
+            "connectable": self.connectable,
+            "time": self.time,
+        }
+
 
 class BluetoothScanningMode(Enum):
     """The mode of scanning for bluetooth devices."""