Check if the datasource is of type loki using meta.id instead of name. (#22877)

Signed-off-by: Cyril Tovena <cyril.tovena@gmail.com>

public/app/features/explore/state/actions.ts

@@ -439,20 +439,21 @@ export const runQueries = (exploreId: ExploreId): ThunkResult<void> => {
 
     stopQueryState(querySubscription);
 
+    const datasourceId = datasourceInstance.meta.id;
+
     const queryOptions: QueryOptions = {
       minInterval,
       // maxDataPoints is used in:
       // Loki - used for logs streaming for buffer size, with undefined it falls back to datasource config if it supports that.
       // Elastic - limits the number of datapoints for the counts query and for logs it has hardcoded limit.
       // Influx - used to correctly display logs in graph
-      maxDataPoints: mode === ExploreMode.Logs && datasourceInstance.name === 'Loki' ? undefined : containerWidth,
+      maxDataPoints: mode === ExploreMode.Logs && datasourceId === 'loki' ? undefined : containerWidth,
       liveStreaming: live,
       showingGraph,
       showingTable,
       mode,
     };
 
-    const datasourceId = datasourceInstance.meta.id;
     const datasourceName = exploreItemState.requestedDatasourceName;
 
     const transaction = buildQueryTransaction(queries, queryOptions, range, scanning);