phsl / new-api

🎨 style(card-table): replace Tailwind border‐gray util with Semi UI border variable for consistent theming

Detailed changes
1. Removed `border-gray-200` Tailwind utility from two `<div>` elements in `web/src/components/common/ui/CardTable.js`.
2. Added inline style `borderColor: 'var(--semi-color-border)'` while keeping existing `border-b border-dashed` classes.
3. Ensures all borders use Semi UI’s design token, keeping visual consistency across light/dark themes and custom palettes.

Why
• Aligns component styling with Semi UI’s design system.
• Avoids hard-coded colors and prevents theme mismatch issues on future updates.

No breaking changes; visual update only.