Imported from GitHub PR https://github.com/abseil/abseil-cpp/pull/1695

#1495 converted the `if (APPLE)` check for linking against `CoreFoundation` to  generator expressions, which is fine and all.
The issue is that they forgot the other Apple platforms, making builds for iOS impossible.
This patch fixes this issue by adding the other Apple platforms that CMake support to the generator expression.
Merge 4f01df8e09f0dc216006dd7ca2d9ce216122b443 into 6dee1532

Merging this change closes #1695

COPYBARA_INTEGRATE_REVIEW=https://github.com/abseil/abseil-cpp/pull/1695 from GeniusVentures:fix-time-build 4f01df8e09f0dc216006dd7ca2d9ce216122b443
PiperOrigin-RevId: 651416278
Change-Id: I47e4d52384e946cc9e421922f7c6edd5bfa1d976