TimeseriesPanel: Fix variables in data links (#56729)

* TimeseriesPanel: Fix variables in data links

* Refactor variable fix for all Timeseries panels

* cr mods

packages/grafana-data/src/vector/SortedVector.ts

@@ -16,6 +16,10 @@ export class SortedVector<T = any> implements Vector<T> {
     return this.source.get(this.order[index]);
   }
 
+  getOrderIndex(index: number): number {
+    return this.order[index];
+  }
+
   toArray(): T[] {
     return vectorToArray(this);
   }