Don't load entities for docker virtual ethernet interfaces in System Monitor

[gjohansson-ST]

Proposed change

Docker containers in bridge mode creates virtual ethernet interfaces (veth).
Exclude these from creating entitles.

For additional context see the linked issue

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 SystemMonitor persisting generated entities for docker network interfaces #107921
• This PR is related to issue:
• Link to documentation pull request:

Checklist

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[jpbede]

Looks good, thanks @gjohansson-ST 👍