disable libcxx test for apple-clang-17

Author: huixie90

libcxx/test/libcxx/atomics/builtin_clear_padding.pass.cpp

@@ -7,7 +7,7 @@
 //===----------------------------------------------------------------------===//
 // UNSUPPORTED: c++03
 // UNSUPPORTED: gcc
-// UNSUPPORTED: clang-19, clang-20, clang-21, clang-22
+// UNSUPPORTED: clang-19, clang-20, clang-21, clang-22, apple-clang-17
 
 // ADDITIONAL_COMPILE_FLAGS: -Wno-deprecated-volatile -Wno-dynamic-class-memaccess