color-controls-migrate

Migrate blocks to use the modern ColorGradientSettingsDropdown component instead of deprecated PanelColorSettings.

Why This Matters

Per CLAUDE.md:

• PanelColorSettings is deprecated and will be removed
• ColorGradientSettingsDropdown is the WordPress standard
• Appears in Styles tab (where users expect color controls)
• Better integration with theme colors and gradients
• Native clear/reset functionality

Ask User

Which block needs migration?

• Provide block name (e.g., "countdown-timer", "progress-bar", "slider")