Default {bubbling,direct}EventTypes to {} in Native VCs

Summary:
## Rationale
**Consistency with Static View Configs:** Static view config will default bubblingEventTypes or directEventTypesto to an empty object, if the any of them are undefined.

https://www.internalfb.com/code/fbsource/[a73d46ab4052838e46e0f3aab8508025795aec1f]/xplat/js/react-native-github/Libraries/NativeComponent/ViewConfig.js?lines=20-23%2C26-33%2C41%2C43-50

Changelog: [Internal]

Reviewed By: yungsters

Differential Revision: D32159393

fbshipit-source-id: fefb3509b9b7c7374d2c3d8962afa5402daf6f72

Libraries/ReactNative/getNativeComponentAttributes.js

@@ -35,6 +35,10 @@ function getNativeComponentAttributes(uiViewClassName: string): any {
   // native component that can be either avoided or simplified.
   let {baseModuleName, bubblingEventTypes, directEventTypes} = viewConfig;
   let nativeProps = viewConfig.NativeProps;
+
+  bubblingEventTypes = bubblingEventTypes ?? {};
+  directEventTypes = directEventTypes ?? {};
+
   while (baseModuleName) {
     const baseModule = UIManager.getViewManagerConfig(baseModuleName);
     if (!baseModule) {