sentinel 控制台编辑流控规则，将QPS切换为并发线程数，流控效果保持不变[BUG]

## Issue Description
文档中描述并发线程类中，流控效果为快速失败

新建规则，效果为Warm UP

再次编辑，将类型改为并发线程数
保存后，效果任然显示为Warm UP

Type: *bug report*

### Describe what happened

### Describe what you expected to happen

编辑模式下切换为线程数，流控效果应该更新为默认效果
### How to reproduce it (as minimally and precisely as possible)

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### Tell us your environment

### Anything else we need to know?

Start by reproducing the rule edit in the Sentinel console: create a rule with Warm UP, switch its type to concurrency threads, and save it. Compare the displayed flow-control effect before and after the type change. Done means the edited rule displays the default effect for concurrency-thread control instead of retaining Warm UP.

Written by the indexing model from the issue text.