Prevent service call error if preset_mode is null

[msp1974]

Breaking change

Proposed change

On the more-info-climate dialog, the preset_mode value can be null. However, if it is null, it calls the set_preset_mode service with the preset_mode as null and causes an error.

Failed to call service climate/set_preset_mode. String value is None for dictionary value @ data['preset_mode']

This minor change amends _handlePresetmodeChanged to prevent calling of the service is the preset_mode is null.

Type of change

• [ ] Dependency upgrade
• [x] 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 #13801
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• [x] The code change is tested and works locally.
• [x] 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