Firefox-ios: [Regression] Link in a child window is not created

[isabelrios]

Adding Regression since this started to happen after this very recent commit: 4c3cf89

There is this automated test failing: testWriteToChildPoupTab()
This is the testing site used in the test.

Looks like the script in that site is not working to show the link that should be created.

Before this issue:

And after:

cc @garvankeeley, as the test owner :) is this expected after that change or there is actually a bug? Thank you in advance!

[garvankeeley]

Interesting, seems like a bug to me

[garvankeeley]

This PR will fix it https://github.com/mozilla-mobile/firefox-ios/pull/6252

[isabelrios]

@garvankeeley yes, I tried and that PR fixes the issue. Tests passing both on iPhone an iPad. Thanks!