Exposed error messages

[synesthesiam]

Hi @home-assistant/language-leaders! The next version of HA will finally make use of the "exposed" set of error messages. These messages tell a user that something isn't exposed instead of just "Sorry, I couldn't understand that".

When you have time, please check your _common.yaml file and verify the 9 error messages:

• no_entity_exposed: A specific entity isn't exposed (use {{ entity}})
• no_entity_in_area_exposed: A specific entity in an area isn't exposed (use {{ entity }} and {{ area }})
• no_entity_in_floor_exposed: A specific entity on a floor isn't exposed (use {{ entity }} and {{ floor }})
• no_domain_exposed: No entities for a domain are exposed (use {{ domain }})
• no_domain_in_area_exposed: No entities for a domain in an area are exposed (use {{ domain }} and {{ area }})
• no_domain_in_floor_exposed: No entities for a domain on a floor are exposed (use {{ domain }} and {{ floor }})
• no_device_class_exposed: No entities of a device class are exposed (use {{ device_class }})
• no_device_class_in_area_exposed: No entities of a device class in an area are exposed (use {{ device_class }} and {{ area }})
• no_device_class_in_floor_exposed: No entities of a device class on a floor are exposed (use {{ device_class }} and {{ floor }})