add host action env

Author: hofbi

.bazelci/presubmit.yml

@@ -539,6 +539,7 @@ tasks:
     test_targets: ["//tests/integration:local_toolchains_test_bazel_self"]
     build_flags:
       - "--action_env=PATH"
+      - "--host_action_env=PATH"
 
   integration_test_compile_pip_requirements_ubuntu:
     <<: *reusable_build_test_all