Show the sensor state using the coordinatordata instead of initial data

[joostlek]

Proposed change

Apparently there was a bug in the YouTube integration. On initialization of the entity _channel got set, on which the _fn's got called. Even if the coordinator updates, the _channel never got updated so the state of the entity stayed the same.

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 #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

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

We should not need to check available in the entity setup.

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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[balloob]

Thanks