Fix incorrect Ambient PWS lightning strike sensor state classes

[bachya]

Proposed change

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)
• Deprecation (breaking change to happen in the future)
• 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 Sensor 'lightning strikes per hour' from ambient_station has state class total_increasing, but its state is not strictly increasing #75518
• This PR is related to issue: N/A
• Link to documentation pull request: N/A

Checklist

• The code change is tested and works locally.
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[frenck]

Thanks, @bachya 👍