Segmented Control: allow passing narrower types as SegmentItem

Which issue does this PR close?

This PR closes #3453

What is the new behavior?

Type passed to items will be passed back with segmentSelect()

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Are there any additional context?

A custom implementation of NoInfer has to be introduced until TypeScript 5.4 has been upgraded to which provide built-in support for NoInfer

The property isCustomIcon on SegmentItem has been removed since it was seemingly unused. This eliminates the need for SegmentItemInternal as well.

Checklist:

The following tasks should be carried out in sequence in order to follow the process of contributing correctly.

Reminders

[ ] Make sure you have implemented tests following the guidelines in: "The good: Test".
[ ] Make sure you have updated the cookbook with examples and showcases (for bug fixes, enhancements & new components).

Review

[ ] Determine if your changes are a fix, feature or breaking-change, and add the matching label to your PR. If it is tooling, dependency updates or similar, add ignore-for-release.
[ ] Do a self-review.
[ ] Request that the changes are code-reviewed
[ ] Request that the changes are UX reviewed (only necessary if your PR introduces visual changes)

When the pull request has been approved it will be merged to develop by Team Kirby.

kirbydesign / designsystem