Implement new HostTargetMetadata fields (Android Bridgeless)

Summary:
Follows D58288489, D58415181.

Implements the remaining `HostTargetMetadata` fields, sent by the debugger on `ReactNativeApplication.metadataUpdated`, on **Android Bridgeless**.

This will be used to display details such as the app name and React Native version in the debugger frontend.

Changelog: [Internal]

Differential Revision: D59271755

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/runtime/ReactHostImpl.java

@@ -61,6 +61,7 @@
 import com.facebook.react.modules.appearance.AppearanceModule;
 import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
+import com.facebook.react.modules.systeminfo.AndroidInfoHelpers;
 import com.facebook.react.runtime.internal.bolts.Task;
 import com.facebook.react.runtime.internal.bolts.TaskCompletionSource;
 import com.facebook.react.turbomodule.core.interfaces.CallInvokerHolder;
@@ -73,6 +74,7 @@
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
@@ -486,6 +488,11 @@ public void onResume() {
     }
   }
 
+  @DoNotStrip
+  private Map<String, String> getHostMetadata() {
+    return AndroidInfoHelpers.getInspectorHostMetadata(mContext);
+  }
+
   /**
    * Entrypoint to destroy the ReactInstance. If the ReactInstance is reloading, will wait until
    * reload is finished, before destroying.

packages/react-native/ReactAndroid/src/main/jni/react/runtime/jni/JReactHostInspectorTarget.cpp

@@ -88,9 +88,31 @@ void JReactHostInspectorTarget::registerNatives() {
 
 jsinspector_modern::HostTargetMetadata
 JReactHostInspectorTarget::getMetadata() {
-  return {
+  jsinspector_modern::HostTargetMetadata metadata = {
       .integrationName = "Android Bridgeless (ReactHostImpl)",
   };
+
+  if (auto javaReactHostImplStrong = javaReactHostImpl_->get()) {
+    auto javaMetadata = javaReactHostImplStrong->getHostMetadata();
+    auto mapClass = findClassLocal("java/util/Map");
+    auto getMethod = mapClass->getMethod<jobject(jobject)>("get");
+
+    auto appIdentifier =
+        getMethod(javaMetadata, make_jstring("appIdentifier").get());
+    auto deviceName = getMethod(javaMetadata, make_jstring("deviceName").get());
+    auto platform = getMethod(javaMetadata, make_jstring("platform").get());
+    auto reactNativeVersion =
+        getMethod(javaMetadata, make_jstring("reactNativeVersion").get());
+
+    metadata.appIdentifier =
+        appIdentifier ? appIdentifier->toString() : nullptr;
+    metadata.deviceName = deviceName ? deviceName->toString() : nullptr;
+    metadata.platform = platform ? platform->toString() : nullptr;
+    metadata.reactNativeVersion =
+        reactNativeVersion ? reactNativeVersion->toString() : nullptr;
+  }
+
+  return metadata;
 }
 
 void JReactHostInspectorTarget::onReload(const PageReloadRequest& request) {

packages/react-native/ReactAndroid/src/main/jni/react/runtime/jni/JReactHostInspectorTarget.h

@@ -36,6 +36,14 @@ struct JReactHostImpl : public jni::JavaClass<JReactHostImpl> {
             "setPausedInDebuggerMessage");
     method(self(), message ? jni::make_jstring(*message) : nullptr);
   }
+
+  jni::local_ref<jni::JMap<jstring, jstring>> getHostMetadata() const {
+    static auto method =
+        javaClassStatic()
+            ->getMethod<jni::local_ref<jni::JMap<jstring, jstring>>()>(
+                "getHostMetadata");
+    return method(self());
+  }
 };
 
 class JReactHostInspectorTarget