fix: dont render network tab for clusters without network (#2905)

Author: astandrik

src/containers/Tenant/Diagnostics/TenantOverview/MetricsTabs/MetricsTabs.tsx

@@ -104,6 +104,16 @@ export function MetricsTabs({
             return null;
         }
 
+        const canShow =
+            networkUtilization !== undefined &&
+            networkThroughput !== undefined &&
+            isFinite(networkUtilization) &&
+            isFinite(networkThroughput);
+
+        if (!canShow) {
+            return null;
+        }
+
         if (isServerless) {
             return <PlaceholderTab />;
         }

src/containers/Tenant/Diagnostics/TenantOverview/MetricsTabs/components/NetworkTab.tsx

@@ -5,31 +5,18 @@ import {cn} from '../../../../../../utils/cn';
 import {UtilizationTabCard} from '../../TabCard/UtilizationTabCard';
 import i18n from '../../i18n';
 
-import {PlaceholderTab} from './PlaceholderTab';
-
 import '../MetricsTabs.scss';
 
 const b = cn('tenant-metrics-tabs');
 
 interface NetworkTabProps {
     to: string;
     active: boolean;
-    networkUtilization?: number;
-    networkThroughput?: number;
+    networkUtilization: number;
+    networkThroughput: number;
 }
 
 export function NetworkTab({to, active, networkUtilization, networkThroughput}: NetworkTabProps) {
-    const canShow =
-        networkUtilization !== undefined &&
-        networkThroughput !== undefined &&
-        isFinite(networkUtilization) &&
-        isFinite(networkThroughput) &&
-        networkThroughput > 0;
-
-    if (!canShow) {
-        return <PlaceholderTab />;
-    }
-
     const fillPercent = networkUtilization * 100;
     const legendText = formatBytes({value: networkThroughput, withSpeedLabel: true});