fix(scene): fix chat scene config custom prompt

[chenliang15405]

Description

fix chat scene use custom prompt template problem. It has [response]、[question] keyword parsed exception

Closes #2628

How Has This Been Tested?

1. create new prompt template with scene type
2. use it in chat data scene

Snapshots:

Include snapshots for easier review.

Checklist:

• My code follows the style guidelines of this project
• I have already rebased the commits and make the commit message conform to the project standard.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules

[Aries-ckt]

LGTM

[fangyinc]

LGTM