TV guide channel header accessibility in grid mode

[defagos]

Channel headers are currently not accessible via VoiceOver in grid mode. This could likely be fixed with collection-view specific mechanism for header accessibility management.

Issue type

Incorrect behavior

Environment information

• Application version: iOS 3.6.0 / tvOS 3.6.0
• iOS / tvOS version: version
• Device: model

Reproducibility

Always reproducible

Steps to reproduce

1. Open the Play SRF app and its TV guide.
2. Display the grid layout.
3. Enable VoiceOver.
4. Navigate.