Only add dataset filter to view in stream links if one exists

Author: Kerry350

x-pack/plugins/infra/public/pages/logs/log_entry_rate/sections/anomalies/log_entry_example.tsx

@@ -111,10 +111,14 @@ export const LogEntryExampleMessage: React.FunctionComponent<Props> = ({
       flyoutOptions: encode({
         surroundingLogsId: id,
       }),
-      logFilter: encode({
-        expression: `${partitionField}: ${dataset}`,
-        kind: 'kuery',
-      }),
+      ...(dataset
+        ? {
+            logFilter: encode({
+              expression: `${partitionField}: ${dataset}`,
+              kind: 'kuery',
+            }),
+          }
+        : {}),
     },
   });