seata 拦截器hook.

## Why you need it?
seata中不管AT/TCC有没有可以自定义拦截器. 做些处理.

## How it could be?
TCC 多租户模式下. commit 或 cache 只能通过BusinessActionContext 传递. 有没有拦截器在调用之前/之后做些处理

## Other related information
Add any other context or screenshots about the feature request here.

Start by reviewing Seata's AT and TCC interceptor or extension entry points, then trace how BusinessActionContext carries data through commit and cache operations. Clarify whether hooks are needed before, after, or both, and define the expected behavior for custom multi-tenant processing before implementation. Done means the interceptor scope and lifecycle are specified and covered by tests.

Written by the indexing model from the issue text.