use secondary color for empty select state, unless it's disabled

[Hypnosphi]

No description provided.

[Copilot]

Pull Request Overview

Changes the color styling for empty select states from disabled color to secondary color, while preserving disabled color for disabled states. This improves visual hierarchy and readability by making empty selects more prominent than disabled ones.

Key changes:

• Updated empty select color from disabled to secondary color
• Added specific disabled styling for empty select states
• Updated visual regression test screenshots to reflect color changes

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated no comments.

File	Description
src/select/select.css	Updated color variables for empty select states and added disabled state handling
.storybook/preview.ts	Removed select styles from color contrast issue selectors
packages/screenshots/*	Updated visual regression test screenshots for both light and dark themes

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