PLAYNEXT-704 Adapt show access to new channel presentation with action sheet selector

[mutaben]

Description

With the new PAC audio page, the show access A-Z button can now be ambiguous since many audio channels are displayed at once.

The design was left open to developer in order to be able to show the list.

I went with a simple and well known pattern, that would be the default for this kind of operation from the HIG, the action sheet.

Another design route is suggested in #539

Of course it is still open for discussion and we can totally revamp should a better proposal come to us.

Simulator.Screen.Recording.-.iPhone.16.Pro.Max.-.2025-01-28.at.20.18.12.mp4

Changes Made

• Refactor a bit the helper methods to build showsViewController(...) method since with the action sheet, it not only needs to build a SectionViewController, but also select it asynchronously after user selection.
• Wire the next VC according to user selection and and show it

Checklist

• I have followed the project's style guidelines.
• I have performed a self-review of my own changes.
• I have made corresponding changes to the documentation.
• My changes do not generate new warnings.
• I have tested my changes and I am confident that it works as expected and doesn't introduce any known regressions.
• I have reviewed the contribution guidelines.