llama-cpp reranker doesn't sort results and ignores `top_n`

[mkhludnev]

LocalAI version:
v3.7.0 (9ecfdc5) docker

Environment, CPU architecture, OS, and Version:
Linux cpu docker

Describe the bug
llama-cpp backend ignores top_n in reranker request

To Reproduce

$ curl -X POST http://localhost:8080/v1/rerank   -H "Content-Type: application/json"   -d '{
    "query": "What is the capital of France?",
    "documents": [
      "Paris is the capital of France.",
      "The Eiffel Tower is in Paris.",
      "London is the capital of England."
    ],
    "model": "jina-reranker-v1-base-en", 
    "top_n":1
  }' 
{"model":"jina-reranker-v1-base-en","usage":{"total_tokens":58,"prompt_tokens":58},
"results":[
{"index":0,"document":{"text":"Paris is the capital of France."},"relevance_score":0.11916422843933105},
{"index":1,"document":{"text":"The Eiffel Tower is in Paris."},"relevance_score":0.029489612206816673},
{"index":2,"document":{"text":"London is the capital of England."},"relevance_score":0.03191265091300011}
]}

Expected behavior

Expecting top_n elements output.

{"results":[{"index":0,"document":{"text":"Paris is the capital of France."},"relevance_score":0.11916422843933105]}

Refs

discussion
Python backend fix: #7025 #6700

[mkhludnev]

another surprise: it doesn't sort results.

curl -X POST http://localhost:8080/v1/rerank \
  -H "Content-Type: application/json" \
  -d '{
    "query": "What are the benefits of exercise?",
    "documents": [
      "Regular exercise can improve cardiovascular health.",
      "Eating a balanced diet is important for overall well-being.",
      "Exercise helps in weight management and builds muscle strength.",
      "Reading books can expand your knowledge and vocabulary."
    ],
    "model": "jina-reranker-v1-tiny-en",
    "top_n": 3
  }'

{
  "model": "jina-reranker-v1-tiny-en",
  "usage": {
    "total_tokens": 85,
    "prompt_tokens": 85
  },
  "results": [
    {
      "index": 0,
      "document": {
        "text": "Regular exercise can improve cardiovascular health."
      },
      "relevance_score": 0.059670690447092056
    },
    {
      "index": 1,
      "document": {
        "text": "Eating a balanced diet is important for overall well-being."
      },
      "relevance_score": 0.019459126517176628
    },
    {
      "index": 2,
      "document": {
        "text": "Exercise helps in weight management and builds muscle strength."
      },
      "relevance_score": 0.07032939791679382
    },
    {
      "index": 3,
      "document": {
        "text": "Reading books can expand your knowledge and vocabulary."
      },
      "relevance_score": -0.002726152306422591
    }
  ]
}

I think it's worth to sort them