fix(cloud): meiju cloud download_lua appliance_type error (#281)

meiju cloud download_lua appliance_type error, just copy the same arg
from msmart cloud.

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-->

## Summary by CodeRabbit

- **Improvements**
- Simplified the construction of the `applianceType` value for
downloads, enhancing clarity and potential compatibility with downstream
processes.

- **Impact**
- The change may affect how the `applianceType` is interpreted, ensuring
better consistency in data handling.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

midealocal/cloud.py

@@ -515,7 +515,7 @@ async def download_lua(
         """Download lua integration."""
         data = {
             "applianceSn": sn,
-            "applianceType": f".{f'x{device_type:02x}'}",
+            "applianceType": hex(device_type),
             "applianceMFCode": manufacturer_code,
             "version": "0",
             "iotAppId": self._app_id,