CI: move Apple Silicon iOS workflows to macos-26 (Tahoe), XCode-26, and iOS-26

[clintonsteiner]

Feature or enhancement

Proposal:

Continuation of work here: #145099 (comment)
Which is blocked by: actions/runner-images#12777

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

#145099 (comment)

Linked PRs

• gh-145098: CI: move Apple Silicon iOS workflows to macos-26 (Tahoe), XCode-26, and iOS-26 #145722

[clintonsteiner]

Created draft pr with work here #145722

[hugovk]

Does this need to be a new issue, or can we continue as part of #145098?

[clintonsteiner]

@hugovk that works for me, closing