Static view configs take precedence over native view configs (#39534)

Summary:
Pull Request resolved: #39534

Fetching native view configs is computationally intensive work, so if some component has both native and static VCs, we should try static first.
This diff changes the `NativeComponentRegistry` so it tries to get static view config first, and then native view config as a fallback.
This diff also removes setting `RuntimeConfigProvider` from RNTester. As it was there for the same purpose of inverting that precedence.
Changelog: [Internal]

Differential Revision: https://internalfb.com/D49413562

fbshipit-source-id: a7a50664e77a726d8f59686b0045cc055f097e39

Author: dmytrorykun

packages/react-native/Libraries/NativeComponent/NativeComponentRegistry.js

@@ -54,15 +54,18 @@ export function get<Config>(
   viewConfigProvider: () => PartialViewConfig,
 ): HostComponent<Config> {
   ReactNativeViewConfigRegistry.register(name, () => {
-    const {native, strict, verify} = getRuntimeConfig?.(name) ?? {
-      native: true,
+    let {native, strict, verify} = getRuntimeConfig?.(name) ?? {
+      native: false,
       strict: false,
       verify: false,
     };
 
-    const viewConfig = native
-      ? getNativeComponentAttributes(name)
-      : createViewConfig(viewConfigProvider());
+    let viewConfig = createViewConfig(viewConfigProvider());
+    if (viewConfig == null) {
+      // Fallback to native view config.
+      native = true;
+      viewConfig = getNativeComponentAttributes(name);
+    }
 
     if (verify) {
       const nativeViewConfig = native

packages/rn-tester/js/RNTesterAppShared.js

@@ -29,15 +29,6 @@ import {BackHandler, StyleSheet, View, useColorScheme} from 'react-native';
 
 // RNTester App currently uses in memory storage for storing navigation state
 
-if (global.RN$Bridgeless) {
-  require('react-native/Libraries/NativeComponent/NativeComponentRegistry').setRuntimeConfigProvider(
-    name => {
-      // In bridgeless mode, never load native ViewConfig.
-      return {native: false, strict: false, verify: false};
-    },
-  );
-}
-
 const RNTesterApp = (): React.Node => {
   const [state, dispatch] = React.useReducer(
     RNTesterNavigationReducer,