The webview will shelter dialog or popmenubutton? How to solve the problem

## System info

Issue occurs on: iOS / Android / both
Plugin version: xxx
Flutter doctor output:

```
paste it here...
```

## Steps to Reproduce

1. ...
2. ...
3. ...

## Logs

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The issue provides no concrete reproduction steps, platform details, plugin version, logs, or Flutter doctor output. Start by determining whether the behavior affects iOS, Android, or both, then gather a minimal reproduction and the relevant verbose logs. Done should include a reproducible problem statement and a confirmed resolution or documented limitation.

Written by the indexing model from the issue text.