收口充值弹窗图标槽

将充值结果弹窗和支付确认遮罩的图标槽迁移到共享 PlatformIconBadge
为 PlatformIconBadge 补充稳定类名并更新相关测试
同步更新 PlatformUiKit 收口文档与团队决策记录

src/components/common/PlatformIconBadge.test.tsx

@@ -11,6 +11,7 @@ test('renders neutral circular icon badge by default', () => {
 
   const badge = document.querySelector('[aria-hidden="true"]');
 
+  expect(badge?.className).toContain('platform-icon-badge');
   expect(badge?.className).toContain('h-9');
   expect(badge?.className).toContain('rounded-full');
   expect(badge?.className).toContain('bg-[var(--platform-neutral-bg)]');

src/components/common/PlatformIconBadge.tsx

@@ -69,6 +69,7 @@ export function PlatformIconBadge({
       aria-label={label}
       aria-hidden={label ? undefined : true}
       className={[
+        'platform-icon-badge',
         'grid shrink-0 place-items-center',
         PLATFORM_ICON_BADGE_SIZE_CLASS[size],
         PLATFORM_ICON_BADGE_SHAPE_CLASS[shape],