[libc++][test] Skip some is_implicit_lifetime tests for apple-clang-17 (#131302)

The skipping was present before but dropped. At the time it was dropped
in #128649, apple-clang-17 wasn't used for CI. But today it is used at
least for the "macos (generic-cxx23, macos-15)" configuration. So I
think we need to skip apple-clang-17 again.

Author: frederick-vs-ja

libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_implicit_lifetime.pass.cpp

@@ -9,7 +9,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // These compilers don't support __builtin_is_implicit_lifetime yet.
-// UNSUPPORTED: clang-18, clang-19, gcc-14, apple-clang-15, apple-clang-16
+// UNSUPPORTED: clang-18, clang-19, gcc-14, apple-clang-15, apple-clang-16, apple-clang-17
 
 // <type_traits>
 

libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_implicit_lifetime.verify.cpp

@@ -9,7 +9,7 @@
 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
 
 // These compilers don't support __builtin_is_implicit_lifetime yet.
-// UNSUPPORTED: clang-18, clang-19, gcc-14, apple-clang-15, apple-clang-16
+// UNSUPPORTED: clang-18, clang-19, gcc-14, apple-clang-15, apple-clang-16, apple-clang-17
 
 // <type_traits>