🎨 style(tokens-table): enhance quota usage progress bar UI

Improves the “Balance” column in `TokensTable`:

• Re-styled progress bar: wider container (`w-[140px]`) and `showInfo` enabled to display percentage label.
• Added `format={() => \`\${percent}%\`}` for precise percentage feedback.
• Maintains dynamic color mapping (success / warning / danger) for clarity.

Result: clearer, more informative visual representation of remaining token quota.

web/src/helpers/render.js

@@ -584,7 +584,7 @@ export function renderText(text, limit) {
 export function renderGroup(group) {
   if (group === '') {
     return (
-      <Tag key='default' color='orange' shape='circle'>
+      <Tag key='default' color='white' shape='circle'>
         {i18next.t('用户分组')}
       </Tag>
     );