Make MQTT climate return PRESET_NONE when no preset is set

[emontnemery]

Proposed change

Make MQTT climate return PRESET_NONE when no preset is set

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

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

Hey there @home-assistant/core, mind taking a look at this pull request as its been labeled with an integration (mqtt) you are listed as a codeowner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[MartinHjelmare]

Thanks!

[raman325]

This was requested to be a patch bugfix if a patch release goes out. Feel free to remove the tag if you feel otherwise, or if there is no 0.118.4 then this can go in 0.119.0

[emontnemery]

@raman325 I think that's fine, it's a bugfix and it shouldn't clash with anything else.