change function_calling_prompt

[dreamfly32]

🚀 The feature

When there are new facts need add, some model outputs do not contain event attributes. When add
- Each data object must have an event attribute
it is ok!

in addition，can custom function_calling_prompt? Suitable for multiple languages

Motivation, pitch

hi

[dreamfly32]

in addition，When the model infers that the fact is empty new_retrieved_facts，Should not execute getupdate_maemory_messages，that will waste time