fix: style panel not detecting applied text color (shows "None")

[Kitenite]

Description

This PR addresses an issue where the style panel failed to detect and display the applied text color on elements.

Related Issues

Closes onlook-dev#1762

Type of Change

• Bug fix
• New feature
• Documentation update
• Release
• Refactor
• Other (please describe):

Testing

Screenshots (if applicable)

Additional Notes

---

Important

Fixes bug in ColorInput by resolving CSS variables to correctly detect applied text color.

• Behavior:
  • Fixes bug in ColorInput where applied text color was not detected due to unresolved CSS variables.
  • Uses resolveCssVariables to resolve CSS variables in ColorInput.
• Functions:
  • Adds resolveCssVariables to color.ts to replace CSS variables with actual values from styleRecord.

^{This description was created by for 9d4b4ed. You can customize this summary. It will automatically update as commits are pushed.}