fix(bgp): отображать только подтверждённые показатели сессий

components/data-grids/bgp-sessions-data-grid.tsx

@@ -223,7 +223,7 @@ function BgpSessionsDataGrid({ sessions, emptyTitle }: BgpSessionsDataGridProps)
         header: ({ column }) => <DataGridSortHeader column={column} title="Prefixes ↓" />,
         cell: ({ row }) => {
           const n = row.original.prefixesRx
-          return n > 0 ? (
+          return n !== null ? (
             <span className="font-mono tabular-nums text-emerald-600 dark:text-emerald-400 text-right block">
               {fmtBgpNum(n)}
             </span>
@@ -243,7 +243,7 @@ function BgpSessionsDataGrid({ sessions, emptyTitle }: BgpSessionsDataGridProps)
         header: ({ column }) => <DataGridSortHeader column={column} title="Prefixes ↑" />,
         cell: ({ row }) => {
           const n = row.original.prefixesTx
-          return n > 0 ? (
+          return n !== null ? (
             <span className="font-mono tabular-nums text-[var(--chart-tx)] text-right block">
               {fmtBgpNum(n)}
             </span>