fix metric

Author: NikolasHaimerl

packages/indexer/src/data-indexing/service/genericEventListening.ts

@@ -264,7 +264,7 @@ async function processLogBatch<TPayload>(
           // The block timestamp is in seconds, the batch start is in milliseconds, so we need to divide the batch start by 1000 to get the same unit.
           // Converting the block timestamp to milliseconds would be counterproductive as it would be rounded to the nearest second which will give an inaccurate latency measurement.
           // We cannot measure the latency below a second, so in the data visualization we can only show the latency in seconds.
-          batchStart / 1000 - Number(blockTimestamp),
+          Math.floor(batchStart / 1000 - Number(blockTimestamp)),
           tags,
         );
       } catch (error) {