Using AI assisted customizations leads to unexpectedly high costs due to chat send

Testing #333535

1. Have a simple repo with literally 0 source files and just a few customizations
2. Use the AI assisted customizer to ask it to speak like a pirate
3. 🐛 Don't realize it will be sent to opus as that's what my model picker has. Also it still leaves the chat window open with no progress so you need to press X and go look at the chat

Here it tooks over 2 minutes and cost me 77 cents