Restore iOS testing on current Xcode. #6933

Job	Run time
Check towncrier / Towncrier Checks	30s
Pre-commit checks / Pre-commit Checks	43s
Package Toga (cocoa) / Create Python Package	28s
Package Toga (android) / Create Python Package	23s
Package Toga (core) / Create Python Package	17s
Package Toga (demo) / Create Python Package	15s
Package Toga (dummy) / Create Python Package	17s
Package Toga (gtk) / Create Python Package	15s
Package Toga (iOS) / Create Python Package	24s
Package Toga (textual) / Create Python Package	14s
Package Toga (toga) / Create Python Package	14s
Package Toga (web) / Create Python Package	18s
Package Toga (winforms) / Create Python Package	26s
Test core (macos-latest, 3.9)	46s
Test core (macos-latest, 3.10)	1m 4s
Test core (macos-latest, 3.11)	45s
Test core (macos-latest, 3.12)	45s
Test core (macos-latest, 3.13)	1m 17s
Test core (ubuntu-latest, 3.9)	48s
Test core (ubuntu-latest, 3.10)	52s
Test core (ubuntu-latest, 3.11)	47s
Test core (ubuntu-latest, 3.12)	1m 2s
Test core (ubuntu-latest, 3.13)	1m 3s
Test core (windows-latest, 3.9)	1m 28s
Test core (windows-latest, 3.10)	1m 38s
Test core (windows-latest, 3.11)	1m 41s
Test core (windows-latest, 3.12)	1m 36s
Test core (windows-latest, 3.13)	2m 15s
Coverage	32s
Testbed (macOS-x86_64)	5m 54s
Testbed (macOS-arm64)	3m 32s
Testbed (windows)	5m 31s
Testbed (linux-x11)	2m 54s
Testbed (linux-wayland)	3m 38s
Testbed (android)	8m 15s
Testbed (iOS)	12m 8s
Testbed (textual-linux)	50s
Testbed (textual-macOS)	55s
Testbed (textual-windows)	1m 52s
	1h 8m 32s

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