Use data_description in config_flow for WLED

[mik-laj]

Breaking change

Proposed change

Ref: https://developers.home-assistant.io/docs/core/integration-quality-scale/rules/config-flow

This pull request adds a help description (data_description) for the keep_master_light configuration option in the WLED integration's options flow. This provides users with context explaining when and why they should enable this option.

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 #
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[home-assistant]

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

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[Copilot]

Pull Request Overview

This pull request adds a help description (data_description) for the keep_master_light configuration option in the WLED integration's options flow. This provides users with context explaining when and why they should enable this option.

Key Changes

• Added a data_description field for the keep_master_light option that explains its purpose for users who dynamically add/remove LED segments