fix: shortened datetimes and set background color for navbar

src/app/deals/components/desktop/DealsTable/useDealsTableColumns.tsx

@@ -1,6 +1,7 @@
 import { useMemo } from "react";
 import { MRT_ColumnDef } from "mantine-react-table";
 import { DealSchema } from "@/lib/client";
+import { utcDateTimeToLocalString } from "@/utils/datetime";
 
 const useDealsTableColumns = () => {
     return useMemo<MRT_ColumnDef<DealSchema>[]>(
@@ -19,7 +20,7 @@ const useDealsTableColumns = () => {
                 header: "Дата создания",
                 accessorKey: "createdAt",
                 Cell: ({ row }) =>
-                    new Date(row.original.createdAt).toLocaleString("ru-RU"),
+                    utcDateTimeToLocalString(row.original.createdAt),
                 enableSorting: true,
                 sortingFn: (rowA, rowB) =>
                     new Date(rowB.original.createdAt).getTime() -