Make default classes load their own so's (#41467)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/41467

Make the DefaultTurboModuleManagerDelegate and the DefaultComponentRegistry load their own so's when they're created.

**Motivation:** We are going to use these two classes in Meta apps. And Meta apps will not invoke DefaultNewArchitectureEntryPoint.load.

Changelog: [Internal]

Reviewed By: mdvacca

Differential Revision: D51036133

fbshipit-source-id: 5ebd4d3b85f435229c9b5950493310aa7fa36ba0

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultComponentsRegistry.kt

@@ -27,6 +27,10 @@ private constructor(componentFactory: ComponentFactory) {
 
   @DoNotStrip private external fun initHybrid(componentFactory: ComponentFactory): HybridData
 
+  init {
+    DefaultSoLoader.maybeLoadSoLibrary()
+  }
+
   companion object {
     @JvmStatic
     @DoNotStrip

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultNewArchitectureEntryPoint.kt

@@ -8,7 +8,6 @@
 package com.facebook.react.defaults
 
 import com.facebook.react.config.ReactFeatureFlags
-import com.facebook.soloader.SoLoader
 
 /**
  * A utility class that serves as an entry point for users setup the New Architecture.
@@ -27,8 +26,7 @@ object DefaultNewArchitectureEntryPoint {
   fun load(
       turboModulesEnabled: Boolean = true,
       fabricEnabled: Boolean = true,
-      bridgelessEnabled: Boolean = false,
-      dynamicLibraryName: String = "appmodules",
+      bridgelessEnabled: Boolean = false
   ) {
     ReactFeatureFlags.useTurboModules = turboModulesEnabled
     ReactFeatureFlags.enableFabricRenderer = fabricEnabled
@@ -42,23 +40,21 @@ object DefaultNewArchitectureEntryPoint {
     this.privateConcurrentReactEnabled = fabricEnabled
     this.privateBridgelessEnabled = bridgelessEnabled
 
-    SoLoader.loadLibrary("react_newarchdefaults")
-    SoLoader.loadLibrary(dynamicLibraryName)
+    DefaultSoLoader.maybeLoadSoLibrary()
   }
 
   @Deprecated(
       message =
           "Calling DefaultNewArchitectureEntryPoint.load() with different fabricEnabled and concurrentReactEnabled is deprecated. Please use a single flag for both Fabric and Concurrent React",
-      replaceWith = ReplaceWith("load(turboModulesEnabled, fabricEnabled, dynamicLibraryName)"),
+      replaceWith = ReplaceWith("load(turboModulesEnabled, fabricEnabled, bridgelessEnabled)"),
       level = DeprecationLevel.WARNING)
   fun load(
       turboModulesEnabled: Boolean = true,
       fabricEnabled: Boolean = true,
       bridgelessEnabled: Boolean = false,
       @Suppress("UNUSED_PARAMETER") concurrentReactEnabled: Boolean = true,
-      dynamicLibraryName: String = "appmodules",
   ) {
-    load(turboModulesEnabled, fabricEnabled, bridgelessEnabled, dynamicLibraryName)
+    load(turboModulesEnabled, fabricEnabled, bridgelessEnabled)
   }
 
   private var privateFabricEnabled: Boolean = false

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultSoLoader.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.defaults
+
+import com.facebook.soloader.SoLoader
+
+internal class DefaultSoLoader {
+  companion object {
+    @Synchronized
+    @JvmStatic
+    fun maybeLoadSoLibrary() {
+      SoLoader.loadLibrary("react_newarchdefaults")
+      try {
+        SoLoader.loadLibrary("appmodules")
+      } catch (e: UnsatisfiedLinkError) {
+        // ignore: DefaultTurboModuleManagerDelegate is still used in apps that don't have
+        // appmodules.so
+      }
+    }
+  }
+}

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/defaults/DefaultTurboModuleManagerDelegate.kt

@@ -49,4 +49,9 @@ private constructor(
     override fun build(context: ReactApplicationContext, packages: List<ReactPackage>) =
         DefaultTurboModuleManagerDelegate(context, packages, eagerInitModuleNames)
   }
+
+  @Synchronized
+  override fun maybeLoadOtherSoLibraries() {
+    DefaultSoLoader.maybeLoadSoLibrary()
+  }
 }