Fix homekit options being mutated during config_flow/migration

[bdraco]

Proposed change

• Since we did not do a deep copy, it was possible for the options
  to get modified in place unexpectedly

Hopefully fixes #62276

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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• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
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