Revert "dropme introduce type error"

This reverts commit 72d8e8899d1fb28637aeae478ac8ec18bc23efa3.

Author: billyvg

src/sentry/static/sentry/app/views/settings/incidentRules/types.tsx

@@ -17,6 +17,10 @@ export type UnsavedTrigger = {
   // UnsavedTrigger can be apart of an Unsaved Alert Rule that does not have an id yet
   alertRuleId?: string;
   label: string;
+  thresholdType: AlertRuleThresholdType;
+  alertThreshold: number;
+  resolveThreshold: number | '';
+  actions: Action[];
 };
 
 export type ThresholdControlValue = {