自动分析热更dll生成CLR绑定的时候，出现函数无法被绑定的情况。

[CookTask1997]

Describe the bug
A clear and concise description of what the bug is.
自动分析热更dll生成CLR绑定的时候，出现函数无法被绑定的情况。

To Reproduce
Steps to reproduce the behavior:
请描述重现步骤或上下文

1. 代码里绑定按钮事件，例如: _uiLogin.BtnQuit.onClick.AddListener(Application.Quit);
2. 点击自动分析 Dll 生成 CLR 绑定
3. 自动生成的 CLRBindings 代码里面未出现 UnityEngine_Application_Binding.Register(app);

Expected behavior
A clear and concise description of what you expected to happen.
应出现如下代码 : UnityEngine_Application_Binding.Register(app);

Unity Version
Please fill in the version of Unity you're currently using
2020.3.18f1c1 和 2020.3.33f1c1

ILRuntime Version
Please fill in the version of ILRuntime you're currently using(package version or git commit hash or repository download date)
package : "version": "2.0.2",