Resync thermostat card setpoint values if service call fails

[karwosts]

Proposed change

If user uses thermostat card to update a thermostat setpoint, it optimistically assumes the setpoint value actually changes. If the call service fails for some reason and the entity setpoints never update, then the thermostat card remains out of sync with the entity, showing the wrong setpoints.

This change waits 2 seconds after the call service, and if the entity has not updated its setpoints within that time, it reverts the thermostat card to showing the current entity setpoints.

This copies the same behavior as the thermostat more-info dialog, which already does this.

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

Additional information

• This PR fixes or closes issue: fixes Thermostat card not updating correctly #15483 maybe Thermostat card does not reflect values sent by MQTT climate module #14961, (needs more info)
• 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

[jbouwh]

Would probably also solve: #14961