Refactor ForEachAppDelegateClass for iOS into a new function that swizzles [UIApplication setDelegate:] to obtain App Delegate classes. #13567

Job	Run time
check_and_prepare	34s
build-ios-macos-14	5m 23s
build-tvos-${{ matrix.os }}	0s
build-desktop-${{ matrix.os }}-${{ matrix.arch }}-${{ matrix.ssl_variant }}	0s
build-android-${{ matrix.os }}	0s
test-desktop-${{ matrix.os }}-${{ matrix.arch }}-${{ matrix.ssl_variant }}	0s
test-tvos-${{ matrix.build_os }}-${{ matrix.tvos_device }}	0s
test-android-${{ matrix.build_os }}-${{ matrix.android_device }}-${{ matrix.test_type }}	0s
test-ios-${{ matrix.build_os }}-${{ matrix.ios_device }}-${{ matrix.test_type }}	1s
summarize-results	1s
attempt-retry	1s
	6m 0s

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