### What problem does this PR solve? During knowledge Q&A conversations, the user-defined rerank model's top_k parameter was not used #1395 ### Type of change - [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve? During knowledge Q&A conversations, the user-defined rerank model's top_k parameter was not used #1395 ### Type of change - [x] Bug Fix (non-breaking change which fixes an issue)