[ASAN/AArch64] Disable forkpty tests until we can fix them

Reported in PR24400. Disable until it works, so we can keep the rest
tested and green.

llvm-svn: 244398

compiler-rt/test/sanitizer_common/TestCases/Linux/getpass.cc

@@ -1,4 +1,5 @@
 // RUN: %clangxx -O0 -g %s -lutil -o %t && %run %t | FileCheck %s
+// REQUIRES: stable-runtime
 #include <assert.h>
 #include <stdio.h>
 #include <unistd.h>