UI: Fix check for Mirage presence setting up sockets (#7497)
UI: Fix check for Mirage presence setting up sockets (#7497)

Without this, exec UI doesn’t work at all in the binary. I made an
unfortunate error in not copying the environment check from
app/utils/fetch.js.
dvusboy/nomad,burdandrei/nomad,dvusboy/nomad,burdandrei/nomad,hashicorp/nomad,burdandrei/nomad,burdandrei/nomad,dvusboy/nomad,dvusboy/nomad,hashicorp/nomad,dvusboy/nomad,dvusboy/nomad,burdandrei/nomad,hashicorp/nomad,hashicorp/nomad,dvusboy/nomad,burdandrei/nomad,burdandrei/nomad,hashicorp/nomad,hashicorp/nomad