Allow selecting multiple states in state condition

[Skaronator]

Proposed change

State condition “state” now supports multiple selections, matching backend capabilities.

vivaldi_GFOe4ftXGo.mp4

Type of change

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

Example configuration

 condition:
    - condition: state
      entity_id: sensor.washer_status
      state:
        - "running"
        - "paused"

Additional information

• This PR fixes or closes issue: fixes ConditionSelector visual editor rejects valid list-based entity_id in Config Flow #25741
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• 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