Fix PaletteHuePicker hue slider inheriting saturation/value from palette selection

[Copilot]

• Understand the issue: PaletteHuePicker's hue slider changes colors based on current saturation/value
• Review similar pickers (PaletteSaturationPicker, PaletteValuePicker) for correct implementation pattern
• Fix the hueColors getter to use hardcoded ARGB colors instead of dynamic colors based on current HSV
• Fix const placement to match codebase style
• Run code review - passed
• Run security check - passed
• Update version to 1.5.2 and CHANGELOG

Original prompt

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This section details on the original issue you should resolve

<issue_title>[Bug report] PaletteHuePicker changes Hue color while updating Palette color</issue_title>
<issue_description>### Version

1.5.0

Platforms

Web

Device Model

Google Chrome

flutter info

-

How to reproduce?

When you are using PaletteHuePicker and you change Palette color to darker or lighter - hue also changes. It can become black or white. I don't think it should work like that...
You can check this how it actually suppose to work
I have downloaded an example of a package and it works like this in it

Logs

No response

Example code (optional)

PaletteHuePicker(
          color: color,
          onChanged: onChanged,
        )

Contact

[email protected]</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Bug report] PaletteHuePicker changes Hue color while updating Palette color #44

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[Copilot]

Pull request overview

This PR fixes a bug where the hue slider in PaletteHuePicker was incorrectly inheriting saturation and value from the current color selection, causing it to appear dark or desaturated when dark/desaturated colors were selected in the palette.

Key Changes:

• Replaced dynamic hueColors getter with static hardcoded RGB values representing the full hue spectrum at maximum saturation and value
• Ensures the hue slider always displays the complete color spectrum (Red → Yellow → Green → Cyan → Blue → Magenta → Red)
• Aligns implementation with existing patterns in PaletteSaturationPicker and PaletteValuePicker

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[AlexV525]

Looks good!

[nohli]

@copilot update version and changelog

[Copilot]

@copilot update version and changelog

Updated version to 1.5.2 and added changelog entry in commit 27e1d5f.