Move flexit climate to HVAC action

[balloob]

Breaking change

Proposed change

Move invalid strings for HVAC mode to use HVAC action constants.

Fixes #71440

I have not tested this change. Someone needs to verify this works.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
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• Breaking change (fix/feature causing existing functionality to break)
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• This PR fixes or closes issue: fixes #
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[thecode]

Code changes looks ok, not tested

[jorgror]

Tested and can confirm that it works as before 2022.5