[ML] Data Drift: Update functional tests comparison chart click coordinates (#234732)

Fixes the test for new grid layout
#228626
PR with CI and flaky test runner, with the new grid feature flag ON:
#234733

Author: rbrtj

x-pack/platform/test/functional/apps/ml/data_visualizer/data_drift.ts

@@ -23,7 +23,7 @@ const dataViewCreationTestData = {
   isSavedSearch: true,
   dateTimeField: '@timestamp',
   chartClickCoordinates: [0, 0] as [number, number],
-  comparisonChartClickCoordinates: [2, 2] as [number, number],
+  comparisonChartClickCoordinates: [0, 0] as [number, number],
   totalDocCount: '86,274',
 };