fix(ui): убрать FieldSeparator под раскрытым Health-check

SettingRow last всегда true для Health-check — separator не между Switch и nested fields.

Co-authored-by: Cursor <[email protected]>

apps/web/src/components/health-check-config-fields.tsx

@@ -140,7 +140,7 @@ export function HealthCheckConfigFields({
         description="TCP/HTTP проверка цели DNS"
         labelFor={`${idPrefix}-enabled`}
         compact
-        last={!value.enabled}
+        last
         className={rowClass}
         titleAddon={
           <Badge