Bug Fix: Home Assistant 2026.6 YAML Domain Validation

Bug fix release for Home Assistant 2026.6 YAML validation compatibility.

Fixed

• Template blueprints with domain: template are no longer incorrectly flagged as invalid.
• Valid infrared.*, radio_frequency.*, and input_button.* entity IDs are no longer reported as unknown domains.
• Added regression coverage for the updated Home Assistant domain handling.