Update model to cl-nagoya-sup-simcse-ja-nss-v1_0_8_4, add new standard name mapping functionality in prediction process, and enhance data loading in sentence transformer service.

Update cached embeddings with new sizes, enhance prediction output by adding standard and aggregate unit columns, and refactor loading logic in the sentence transformer service for improved error handling.

Update model to cl-nagoya-sup-simcse-ja-nss-v1_0_8_3, add new data files, and enhance startup process with directory creation and model loading.