Fix casing of shouldflushDiscreteUpdates

shouldflushDiscreteUpdates -> shouldFlushDiscreteUpdates

packages/react-dom/src/events/DOMEventResponderSystem.js

@@ -610,7 +610,7 @@ export function processEventQueue(): void {
     return;
   }
   if (discrete) {
-    if (shouldflushDiscreteUpdates(currentTimeStamp)) {
+    if (shouldFlushDiscreteUpdates(currentTimeStamp)) {
       flushDiscreteUpdates();
     }
     discreteUpdates(() => {
@@ -1019,7 +1019,7 @@ export function generateListeningKey(
 
 let lastDiscreteEventTimeStamp = 0;
 
-export function shouldflushDiscreteUpdates(timeStamp: number): boolean {
+export function shouldFlushDiscreteUpdates(timeStamp: number): boolean {
   // event.timeStamp isn't overly reliable due to inconsistencies in
   // how different browsers have historically provided the time stamp.
   // Some browsers provide high-resolution time stamps for all events,

packages/react-dom/src/events/ReactDOMEventListener.js

@@ -19,7 +19,7 @@ import {
 import {runExtractedPluginEventsInBatch} from 'events/EventPluginHub';
 import {
   dispatchEventForResponderEventSystem,
-  shouldflushDiscreteUpdates,
+  shouldFlushDiscreteUpdates,
 } from '../events/DOMEventResponderSystem';
 import {isFiberMounted} from 'react-reconciler/reflection';
 import {HostRoot} from 'shared/ReactWorkTags';
@@ -229,7 +229,7 @@ function trapEventForPluginEventSystem(
 }
 
 function dispatchDiscreteEvent(topLevelType, eventSystemFlags, nativeEvent) {
-  if (!enableEventAPI || shouldflushDiscreteUpdates(nativeEvent.timeStamp)) {
+  if (!enableEventAPI || shouldFlushDiscreteUpdates(nativeEvent.timeStamp)) {
     flushDiscreteUpdates();
   }
   discreteUpdates(dispatchEvent, topLevelType, eventSystemFlags, nativeEvent);