[Settings] Add Validation for Volume and Brightness

[DotDev262]

WinHome accepts any integer for volume and brightness. We need to add validation to ensure these values are between 0 and 100.

Tasks:

• Update SystemSettingsService.cs to validate these values.
• Log a warning if out of range.
• Add unit tests for the validation logic.

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[VIDYANKSHINI]

Hi @DotDev262

I would like to work on this issue. My planned approach is:

1. Review the current implementation in SystemSettingsService.cs to understand how volume and brightness values are currently handled.

2. Add validation to ensure both values remain within the valid range of 0–100.

3. Implement warning logs for any invalid or out-of-range inputs.

4. Add unit tests covering:

   • Valid values
   • Boundary cases (0 and 100)
   • Invalid values below 0 and above 100

5. Ensure the changes follow the existing project structure and coding standards.

Please assign this issue to me if it is available.

[DotDev262]

You can work on this