不能通过 getPageInfoByContext 获取当前的页面信息

```
var topPageInfo = BoostNavigator.instance.getTopPageInfo();
var getPageInfo = BoostNavigator.instance.getPageInfoByContext(myContext!);
'topPageInfo = ${topPageInfo?.pageName}, getPageInfo = ${getPageInfo?.pageName}'.printLog(Level.error);

/// topPageInfo = /flutter/retrievePasswordPage, getPageInfo = /flutter/loginPage
```
在栈顶页面通过context获取页面信息 获取的是 initialRoute 的信息内容

Start by reproducing the reported snippet with BoostNavigator.instance.getTopPageInfo() and getPageInfoByContext(myContext!), then trace both entry points to compare how they determine the current route. Done means getPageInfoByContext returns the current top page, /flutter/retrievePasswordPage, rather than the initialRoute login page.

Written by the indexing model from the issue text.