[clang] [clang] Enable -fstack-clash-protection by default for Android (PR #209279)

[Sidhartha kumar via cfe-commits]

Alearner12 wrote:

 The failing AArch64 test is lldb-api :: functionalities/statusline/TestStatusline.py. All scripted-command markers are present; the failure is due to the expected statusline escape sequence (\x1b7) not appearing.  this  patch only changes Clang driver behavior for Android triples, while the failing test uses aarch64-unknown-linux-gnu, so the failure appears unrelated and timing-sensitive . 


https://github.com/llvm/llvm-project/pull/209279