fix(theme): define old-neutral color as static (#4193)

Author: HugoRCD

src/templates.ts

@@ -76,7 +76,7 @@ export function getTemplates(options: ModuleOptions, uiConfig: Record<string, an
     write: true,
     getContents: () => `@source "./ui";
 
-@theme default inline {
+@theme static {
   --color-old-neutral-50: ${colors.neutral[50]};
   --color-old-neutral-100: ${colors.neutral[100]};
   --color-old-neutral-200: ${colors.neutral[200]};
@@ -88,6 +88,9 @@ export function getTemplates(options: ModuleOptions, uiConfig: Record<string, an
   --color-old-neutral-800: ${colors.neutral[800]};
   --color-old-neutral-900: ${colors.neutral[900]};
   --color-old-neutral-950: ${colors.neutral[950]};
+}
+
+@theme default inline {
   ${[...(options.theme?.colors || []).filter(color => !colors[color as keyof typeof colors]), 'neutral'].map(color => [50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 950].map(shade => `--color-${color}-${shade}: var(--ui-color-${color}-${shade});`).join('\n\t')).join('\n\t')}
   ${options.theme?.colors?.map(color => `--color-${color}: var(--ui-${color});`).join('\n\t')}
   --radius-xs: calc(var(--ui-radius) * 0.5);