Use standard (lowercase) assert in ReactInstanceIntegrationTest

Summary:
Changelog: [Internal]

TSIA; `ASSERT` isn't universally defined so let's switch to `assert`.

bypass-github-export-checks

Reviewed By: huntie

Differential Revision: D54305583

fbshipit-source-id: ee80b462f1372e53301f1bb66eb589e4f7da89c6

packages/react-native/ReactCommon/jsinspector-modern/tests/ReactInstanceIntegrationTest.h

@@ -7,15 +7,17 @@
 
 #pragma once
 
+#include "InspectorMocks.h"
+#include "ReactNativeMocks.h"
+#include "UniquePtrFactory.h"
+
 #include <folly/executors/QueuedImmediateExecutor.h>
 #include <folly/json.h>
 #include <gtest/gtest.h>
 #include <jsinspector-modern/InspectorInterfaces.h>
-#include <memory>
 
-#include "InspectorMocks.h"
-#include "ReactNativeMocks.h"
-#include "UniquePtrFactory.h"
+#include <cassert>
+#include <memory>
 
 namespace facebook::react::jsinspector_modern {
 
@@ -49,7 +51,7 @@ class ReactInstanceIntegrationTest : public Test {
   MockRemoteConnection& getRemoteConnection() {
     EXPECT_EQ(mockRemoteConnections_.objectsVended(), 1);
     auto rawPtr = mockRemoteConnections_[0];
-    ASSERT(rawPtr != nullptr);
+    assert(rawPtr);
     return *rawPtr;
   }