[libc++][test] XFAIL sized deallocation tests for AIX, z/OS, and MinGW (#98960)

Summary:
The sized deallocation test cases fail on AIX, z/OS, and MinGW because
they default to `-fno-sized-deallocation`. This patch XFAILs these test
cases for the affected targets. Once they change the default, we will
get `unexpectedly pass`.

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Differential Revision: https://phabricator.intern.facebook.com/D60250910

Author: xingxue-ibm

libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array14.pass.cpp

@@ -15,6 +15,9 @@
 // XFAIL: apple-clang
 // XFAIL: using-built-library-before-llvm-11
 
+// AIX, z/OS, and MinGW default to -fno-sized-deallocation.
+// XFAIL: target={{.+}}-aix{{.*}}, target={{.+}}-zos{{.*}}, target={{.+}}-windows-gnu
+
 #include <new>
 #include <cstddef>
 #include <cstdlib>

libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete14.pass.cpp

@@ -15,6 +15,9 @@
 // XFAIL: apple-clang
 // XFAIL: using-built-library-before-llvm-11
 
+// AIX, z/OS, and MinGW default to -fno-sized-deallocation.
+// XFAIL: target={{.+}}-aix{{.*}}, target={{.+}}-zos{{.*}}, target={{.+}}-windows-gnu
+
 #include <new>
 #include <cstddef>
 #include <cstdlib>