how to accelerate bge m3 sparse embeding module when inference？

### Feature request

how to accelerate bge m3 sparse embeding module when inference？

### Motivation

the sparse embeding process is too slow during infer bge-m3 after accelerate the dense emb inference

### Your contribution

you can give a idea，I will learn how to make it work

Start by profiling the bge-m3 sparse embedding inference process and comparing it with the already accelerated dense embedding path. The issue does not name files or tests; done would mean identifying and implementing a way to reduce sparse inference time, then measuring the improvement.

Written by the indexing model from the issue text.