Allow the ZHA default light transition time to be configured as a float

[puddly]

Proposed change

Allows light transition times to be configured as a float instead of just an integer.

In making this change, I've moved all integer casting and multiplication by 10 into the Zigbee command calls, since deciseconds are an internal unit.

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)
• Deprecation (breaking change to happen in the future)
• 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 ZHA "Default light transition time" option doesn't allow decimals #83458
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
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• Tests have been added to verify that the new code works.

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• Documentation added/updated for www.home-assistant.io

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  Updated by running python3 -m script.gen_requirements_all.
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[home-assistant]

Hey there @dmulcahey, @Adminiuga, mind taking a look at this pull request as it has been labeled with an integration (zha) you are listed as a code owner for? Thanks!

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