[tracking][iOS][tvOS] Update of iPhone and AppleTV device queues to iOS 26

[matouskozak]

Tracking work related to update of iPhone and AppleTV helix device queues.

• Switch back to regular queues (from scouting) and restore full coverage over runtime and runtime-extra-platforms
• Restore building test apps on helix

Connected issues:

• iOS device not found in OSX.13.Amd64.Iphone.Open dnceng#6440
• Restore build on helix for mono iOS + TVOS tests #121967
• [infra][iOS] Fully build smoke tests on azdo build images #121927

[dotnet-policy-service]

Tagging subscribers to 'os-ios': @vitek-karas, @kotlarmilos, @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

Tagging subscribers to 'os-tvos': @vitek-karas, @kotlarmilos, @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

Tagging subscribers to this area: @akoeplinger, @matouskozak, @simonrozsival
See info in area-owners.md if you want to be subscribed.

[kotlarmilos]

Completed in #122702.