Add restore temperature to modbus climate

[janiversen]

Breaking change

Proposed change

Try to restore target_temperature in climate, unfortunately the climateEntity, do not store all temperatures, so it needs a little bit of coding.

With this PR all modbus platform have restore_last_state active.

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)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
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[probot-home-assistant]

Hey there @adamchengtkc, @vzahradnik, mind taking a look at this pull request as its been labeled with an integration (modbus) you are listed as a codeowner for? Thanks!
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[KapJI]

Mypy failure fixed by #50965

[janiversen]

Mypy failure fixed by #50965

thanks.

[MartinHjelmare]

Looks good!