More restrictive state updates of UniFi uptime sensor

[Kane610]

Breaking change

Proposed change

Remove state changes that are not related to the device having a new uptime.
Epoch time (old way of reporting uptime by UniFi) only needs to trigger state change when it has increased.
Uptime in seconds should only trigger state change when smaller than what previously has been reported.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes UniFi uptime sensor is changing a few milli (or micro) seconds now and then #49483
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

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  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
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[frenck]

Thanks, @Kane610 👍

[Kane610]

Thanks @frenck 🎉