Pass nativeTimestamp into PressabilityPerformanceEvent

Summary:
Pass nativeTimestamp into PressabilityPerformanceEvent as a way to uniquely identify events.

Changelog: [Internal]

Differential Revision: D30648544

fbshipit-source-id: 7cb0146f6ff1655f1312e5094535e59268fb2a22

Author: JoshuaGross

Libraries/Pressability/Pressability.js

@@ -631,6 +631,7 @@ export default class Pressability {
         PressabilityPerformanceEventEmitter.emitEvent(() => {
           return {
             signal,
+            nativeTimestamp: event.nativeEvent.timestamp,
             touchDelayMs: Date.now() - event.nativeEvent.timestamp,
           };
         });

Libraries/Pressability/PressabilityPerformanceEventEmitter.js

@@ -12,6 +12,7 @@ import {type PressabilityTouchSignal as TouchSignal} from './PressabilityTypes.j
 
 export type PressabilityPerformanceEvent = $ReadOnly<{|
   signal: TouchSignal,
+  nativeTimestamp: number,
   touchDelayMs: number,
 |}>;
 export type PressabilityPerformanceEventListener = PressabilityPerformanceEvent => void;