fix: resolve TS errors — readonly array type and Stack sx props

client/src/pages/admin-test-checklist/ui/AdminTestChecklistPage.tsx

@@ -65,7 +65,7 @@ export function AdminTestChecklistPage() {
   })
 
   const sections = useMemo(() => {
-    const map = new Map<string, typeof TEST_CHECKLIST_ITEMS>()
+    const map = new Map<string, (typeof TEST_CHECKLIST_ITEMS)[number][]>()
     for (const item of TEST_CHECKLIST_ITEMS) {
       const existing = map.get(item.section) || []
       existing.push(item)
@@ -81,7 +81,7 @@ export function AdminTestChecklistPage() {
 
   return (
     <Box>
-      <Stack direction="row" justifyContent="space-between" alignItems="center" sx={{ mb: 3 }}>
+      <Stack direction="row" sx={{ mb: 3, justifyContent: 'space-between', alignItems: 'center' }}>
         <Box>
           <Typography variant="h5" sx={{ fontWeight: 700 }}>
             Тест-чеклист