Read Model X third-row heater state over parked Bluetooth

[Bre77]

Breaking change

Proposed change

Reroute the two Model X third-row seat-heater selects to a parked
climate_state() INFO read when the vehicle is BLE paired, reusing the
sleep-aware scheduler from #981 and its second serialized endpoint (closures +
climate never issue an aggregate call). Set commands still route through the
command router. The rear_seat_heaters == 3 and third_row_seats != "None"
metadata gate is preserved, with both present and absent tests.

This stacks on #981 (its base branch), the last rung of the local-Bluetooth
read series.

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

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• This PR fixes or closes issue: fixes #
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