fix embed content

[BAKAOLC]

This pull request refines how preprocessing action data is handled before generating a response in the AiInteractions.Chatting.cs module. The main improvement is ensuring that the preprocessing embed is only created and shown if there is meaningful preprocessing action data to display.

Enhancement to preprocessing action display:

• Updated the logic in await ModifyOriginalResponseAsync(x => ... ) to only create and show the preprocessing embed if the joined preprocessing action data string is not empty or whitespace, preventing empty embeds from being displayed.

[Copilot]

Pull Request Overview

This pull request improves the preprocessing action display logic in the AI chatting module by preventing empty embeds from being shown to users. The change ensures that preprocessing embeds are only created and displayed when there is actual meaningful content to show.

• Added validation to check if preprocessing action data contains non-empty content before creating an embed
• Extracted the preprocessing action data string to a variable for better readability and reuse

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}