Test-proxy issue in build version 2.2.2-rc.2

Sorry it took me a while to actually deploy this to staging and test it but in doing so I realised something was introduced between 2.2.2-rc.1 and 2 that caused our build pipeline to fail. I'll look back at the PRs merged now and see if I can spot it.

I tried to reproduce locally by running in production mode but must be triggered only during a build.

2025/08/26 13:19:14.772843 [ERROR] An error occurred during execution of command [app-deploy] - [StageApplication]. Stop running the command. Error: chown /var/app/staging/programs/server/npm/node_modules/meteor/aldeed_tabular/test-proxy/node_modules/@babel/runtime/helpers: no such file or directory 

update 1

Can't see any trouble building locally or looking through the diff of changes.

update 2

@jankapunkt - could this text-proxy stuff have gotten into the 2.x release somehow ? I don't see it mentioned so it's weird.

Start by comparing the changes between builds 2.2.2-rc.1 and 2.2.2-rc.2, focusing on the deployment build rather than production-mode local runs. Investigate why test-proxy/node_modules/@babel/runtime/helpers is referenced during app-deploy, then verify that the staging build completes without the missing-path error.