When running led tests Mac_x64 tool_host_cross_arch_tests are not collecting the osx_sdk properties from the builds causing it to install a very old version of xcode instead of the expected one.

https://luci-milo.appspot.com/raw/build/logs.chromium.org/flutter/led/flutter-try-builder_chops-service-accounts.iam.gserviceaccount.com/5bcbb7a6b78f08e31c041c4e27bd75b63fcd423070a8d523467b4fe179aebbff/+/build.proto?server=chromium-swarm.appspot.com