Explore/Logs: Fix tooltip display for log graph (#25544)

public/app/core/logs_model.ts

@@ -153,6 +153,9 @@ export function makeSeriesForLogs(sortedRows: LogRowModel[], bucketSize: number,
       ...valueField.config,
       ...valueField.config,
       color: series.color,
       color: series.color,
     };
     };
+    valueField.name = series.alias;
+    const fieldDisplayProcessor = getDisplayProcessor({ field: valueField, timeZone });
+    valueField.display = (value: any) => ({ ...fieldDisplayProcessor(value), color: series.color });
 
 
     const points = getFlotPairs({
     const points = getFlotPairs({
       xField: timeField,
       xField: timeField,