Remove "first-input" event type from Event Timing API logging implementation (#35771)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/35771

[Changelog][Internal]
Based on the internal discussion, we don't want to report `first-input` event types for RN (just use plain `event` instead), in the way that [Event Timing API standard suggests](https://www.w3.org/TR/event-timing), as this is doesn't have that clear semantics in the context of RN, also to keep it simpler.

Reviewed By: rubennorte

Differential Revision: D42341923

fbshipit-source-id: eff2487dee17ef082604e4c807b4d41485328114

Libraries/WebPerformance/PerformanceEntryReporter.cpp

@@ -170,15 +170,12 @@ void PerformanceEntryReporter::event(
     const std::string &name,
     double startTime,
     double duration,
-    bool isFirstInput,
     double processingStart,
     double processingEnd,
     uint32_t interactionId) {
   logEntry(
       {name,
-       static_cast<int>(
-           isFirstInput ? PerformanceEntryType::FIRST_INPUT
-                        : PerformanceEntryType::EVENT),
+       static_cast<int>(PerformanceEntryType::EVENT),
        startTime,
        duration,
        processingStart,
@@ -267,12 +264,10 @@ void PerformanceEntryReporter::onEventEnd(EventTag tag) {
     // TODO: Define the way to assign interaction IDs to the event chains
     // (T141358175)
     const uint32_t interactionId = 0;
-    bool firstInput = isFirstInput(name);
     event(
         std::move(name),
         entry.startTime,
         timeStamp - entry.startTime,
-        firstInput,
         entry.dispatchTime,
         timeStamp,
         interactionId);