Fix leakage of JNI object references

Fixes https://github.com/godotengine/godot/issues/87548

platform/android/net_socket_android.h

@@ -63,6 +63,7 @@ protected:
 public:
 	static void make_default();
 	static void setup(jobject p_net_utils);
+	static void terminate();
 
 	virtual void close();