update eval config

[Ceceliachenen]

1. 修复eval上传新的数据集时出现的错误
2. run_config 支持并发评估eval数据，并在前端透出
3. 支持自定义并保存eval llm评估prompt，并在前端透出

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
13875	5523	40%	0%	🟢

New Files

File	Coverage	Status
backend/evaluation/evaluator/prompts/eval_prompts.py	53%	🟢
TOTAL	53%	🟢

Modified Files

File	Coverage	Status
backend/api/v1/config_apis/evaluation.py	19%	🟢
backend/db/models/evaluation/evaluator_config.py	89%	🟢
backend/db/models/evaluation/run_config.py	91%	🟢
backend/evaluation/evaluator/llm_judge_evaluator.py	22%	🟢
backend/evaluation/evaluator/utils.py	59%	🟢
backend/rag/evaluation_tool.py	23%	🟢
backend/service/tool/evaluation_service.py	15%	🟢
TOTAL	45%	🟢

updated for commit: 1105dfa by action🐍

[moria97]

这个pr可以拆成两个吗？一个fix bug，一个加自定义prompt的逻辑，我打算年前发布一个和线上0128一样的版本，不改动数据库的。自定义prompt的可以放在后面