There is a bug in webView goBack implementation

Question

1. We need to use the canGoBack method of webView, but we found that weex does not provide the export of this method

2. Then I found that the source code of weex sent fireEvent to the js side in the - (void)webViewDidFinishLoad:(UIWebView *)webView; method

3. However, when ajax refreshes the page asynchronously, the - (void)webViewDidFinishLoad:(UIWebView *)webView; method on the Native side will not be triggered, so our js side still uses the previous canGoBack value