Some cross-frame requests never receive Network.loadingFinished events

#### Provide the steps to reproduce
1. Run LH on https://www.oyorooms.com/us/

#### What is the current behavior?

No `Network.loadingFinished` event for https://facebook.com/tr *Document* request will be in the devtools log.

#### What is the expected behavior?

https://facebook.com/tr has a Network.loadingFinished event.

Discovered while investigating https://github.com/GoogleChrome/lighthouse/issues/11849. The implications for this are that with enough of these requests (3 or more) Lighthouse will timeout while waiting for the page to load.

#### Environment Information
* Affected Channels: all
* Lighthouse version: all