add TargetedUpsellModalExperimentV2 flag (#29896)

static/app/data/experimentConfig.tsx

@@ -19,6 +19,12 @@ export const experimentList = [
     parameter: 'exposed',
     assignments: [0, 1],
   },
+  {
+    key: 'TargetedUpsellModalExperimentV2',
+    type: ExperimentType.Organization,
+    parameter: 'exposed',
+    assignments: [0, 1],
+  },
   {
     key: 'TrialLabelExperiment',
     type: ExperimentType.Organization,