Fix Huawei LTE empty WiFi host list handling

[scop]

Description:

Fixes an issue with an empty WiFi clients listing with some router models and scenarios.

The issue essentially makes the integration inoperable in affected setups, so a point release with this would be welcome. Not sure what's the proper way to ask it.

https://github.com/Salamek/huawei-lte-api/releases/tag/1.4.4

Related issue (if applicable): fixes #28922

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist

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• Documentation added/updated in home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly. Update and include derived files by running python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt by running python3 -m script.gen_requirements_all.
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If the code does not interact with devices:

• Tests have been added to verify that the new code works.