iOS contacts permission modal causes contacts tests to fail

cordova-ios CI returned test results and all of the contacts tests failed:

https://ci.apache.org/builders/cordova-ios/builds/1605/steps/getting-test-results/logs/stdio

Turns out a modal had appeared asking for permission to access contacts and was never dismissed. After I clicked okay in the modal, everything was green on the next build:

https://ci.apache.org/builders/cordova-ios/builds/1606

We either need a way to grant the permissions or we should exclude these tests from the CI.