firebase emulator ui does not respect "emulator.ui.host" field in firebase.json

### [REQUIRED] Environment info

**firebase-tools:** 12.4.7, 12.4.6, 11.30.0

**Platform:** macOS (in docker linux/amd64)

### [REQUIRED] Test case

```dockerfile
FROM node:lts-slim

RUN apt-get update && apt-get install -y autoconf automake bash g++ libtool make openjdk-17-jre-headless python3 && \
java -version

RUN npm install -g firebase-tools@12.4.7 typescript && \
npm cache clean --force && \
firebase setup:emulators:database && \
firebase setup:emulators:firestore && \
firebase setup:emulators:pubsub && \
firebase setup:emulators:storage && \
firebase setup:emulators:ui

VOLUME /root/.cache
WORKDIR /root/app

EXPOSE 4000 4400 5000 5001 8080 8085 9000 9005 9009 9199
CMD ["sh"]
```

```firebase.json
{
"emulators": {
"singleProjectMode": false,
"auth": {
"host": "0.0.0.0",
"port": 9098
},
"functions": {
"host": "0.0.0.0",
"port": 5001
},
"firestore": {
"host": "0.0.0.0",
"port": 8080
},
"pubsub": {
"host": "0.0.0.0",
"port": 8085
},
"storage": {
"host": "0.0.0.0",
"port": 9199
},
"eventarc": {
"host": "0.0.0.0",
"port": 9299
},
"ui": {
"host": "0.0.0.0"
},
"hub": {
"host": "0.0.0.0"
},
"logging": {
"host": "0.0.0.0"
}
}
}
```

### [REQUIRED] Steps to reproduce

```sh
docker build -t fbtest:latest -f Dockerfile
docker run --rm -ti -v $PWD:/root/app /bin/bash

# in container
firebase emulators:start --only auth,firestore --project test
```

### [REQUIRED] Expected behavior

Emulator UI should start on 0.0.0.0 based on the settings in firebase.json

### [REQUIRED] Actual behavior

Emulator UI starts on 127.0.0.1. Auth and Firestore both respect the Host option.