Fix ColorPalette to respect clearable property when deselecting colors

[deepakpra]

What?

Closes #71725

Fixes the behavior of the ColorPalette component when clearable={false}. Previously, deselecting a color would still trigger the clearColor function even when clearing was disabled.

Why?

The clearable property is intended to prevent a user from clearing a selected color. Without this fix, the behavior was inconsistent and did not respect the clearable setting.

See #71725 for more details.

How?

Updated the clearColor function to check the clearable value before clearing a color.

Ensured that clearing a color is only possible when clearable is set to true.

Testing

Setting clearable={false} now prevents deselecting a color.

Setting clearable={true} still allows clearing the selected color.

Existing usages of ColorPalette with clearable={true} or default behavior continue to work without issues.

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[deepakpra]

As clarified in this comment, the current behaviour of the clearable prop is intentional, I’m closing this PR accordingly.