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

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

clintonsteiner wants to merge 7 commits into

python:mainpython/cpython:mainfrom

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