Revert "[sanitizer] Remove -hwasan-use-after-scope=1"

Accidentally deleted additional flag.

This reverts commit 7f5a9dc.

Author: vitalybuka

zorg/buildbot/builders/sanitizers/buildbot_functions.sh

@@ -268,6 +268,7 @@ function build_stage2 {
     export HWASAN_SYMBOLIZER_PATH="${llvm_symbolizer_path}"
     export HWASAN_OPTIONS="abort_on_error=1"
     llvm_use_sanitizer="HWAddress"
+    fsanitize_flag="-fsanitize=hwaddress -mllvm -hwasan-use-after-scope=1"
     # FIXME: Support globals with DSO https://github.com/llvm/llvm-project/issues/57206
     cmake_stage2_common_options+=" -DLLVM_ENABLE_PLUGINS=OFF"
   elif [ "$sanitizer_name" == "ubsan" ]; then