[macOS] Fix dynamic library lookup for system libraries.

platform/macos/os_macos.mm

@@ -230,7 +230,10 @@ Error OS_MacOS::open_dynamic_library(const String &p_path, void *&p_library_hand
 		path = get_framework_executable(get_executable_path().get_base_dir().path_join("../Frameworks").path_join(p_path.get_file()));
 	}
 
-	ERR_FAIL_COND_V(!FileAccess::exists(path), ERR_FILE_NOT_FOUND);
+	if (!FileAccess::exists(path)) {
+		// Try using path as is. macOS system libraries with `/usr/lib/*` path do not exist as physical files and are loaded from shared cache.
+		path = p_path;
+	}
 
 	p_library_handle = dlopen(path.utf8().get_data(), RTLD_NOW);
 	ERR_FAIL_NULL_V_MSG(p_library_handle, ERR_CANT_OPEN, vformat("Can't open dynamic library: %s. Error: %s.", p_path, dlerror()));