Model not set when running "Automation" test

Question

### What version of the Codex App are you using (From “About Codex” dialog)?

Version 260203.1501 (523)

### What subscription do you have?

Business

### What issue are you seeing?

When trying to send follow-up prompts, the "Model" defaults to "" (i.e. just "Medium" is shown).

After you send the prompt:
```
{"detail":"The '' model is not supported when using Codex with a ChatGPT account."}
```

### What steps can reproduce the bug?

Try running a "Test" of an "Automation"

### What is the exp