To collect the requests starting from page load, we need to register event listeners before page loading (`page.goto` API invocation). By default webdriver will wait for hydration, so we need to register events inside `browser.loadPage` to ensure we can collect the requests before hydration is done.
### Changes
* Add `beforePageLoad` for next webdriver
* registry page `'request'` event before loading page
* update related tests for agruments change
### Usage
```js
browser = await webdriver(appPort, '/path', {
waitHydration, // default true
retryWaitHydration, // default false
disableCache, // default false
beforePageLoad, // default undefined
})
```
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