版本2.5.0 [bug] 关于会话标签的问题

首先，我设置了打开windterm默认会打开上次最后一个会话窗口，而这个会话窗口是一个本地cmd的shell，在设置里我配置的是鼠标右键单击可以关闭当前标签，问题是：一点右窗口就会退出整个windterm，如果我不用右键，直接点击标签上的X关闭窗口，也有70%的概率导致整体windterm退出程序，希望改进，感谢！

Reproduce the issue using the configured last local cmd shell session, first closing the tab with the right mouse button and then with the tab’s X. Check whether either action exits the whole WindTerm application; done means closing the session tab leaves WindTerm running. No source file or test is identified in the issue, so the relevant entry point must be located from the tab-closing behavior.

Written by the indexing model from the issue text.