Wr/inital message displayed @W-20474246@

[WillieRuemmele]

What does this PR do?

displays the first messsage sent from the agent again

this was removed some time during the NGA->MAIN merge

What issues does this PR fix or reference?

@W-20474246@

after:

 ➜  ../../oss/plugin-agent/bin/run.js agent preview --authoring-bundle Willie_Resort_Manager 
Warning: This command is currently in beta. Any aspect of this command can change without advanced notice. Don't use beta commands in your scripts.

╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│                                New session started with "Willie_Resort_Manager" (57247842-bbca-42a8-a9ef-9d2ae5192f95)                                 │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

Willie_Resort_Manager 12/8/2025, 5:11:09 PM
╭──────────────────────────────────────────────╮
│ Hi, I'm an AI assistant. How can I help you? │
╰──────────────────────────────────────────────╯
 ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

╭────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ Save chat history before exiting? (y/n)                                                                                                                │
│ Press 'y' to save, 'n' to exit without saving                                                                                                          │
╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯

[EstebanRomero84]

QA notes:
I verified that the first message sent from the agent is displayed. Tested it for published and local agents.