[Feature] Ability to reference workflow name for webhook data

### 功能描述 / Description

I would like to request the ability to reference workflow name as variable for webhook data.

### 请求动机 / Motivation

I use Webhook as deployment to deploy certificate to Hashicorp Vault via HTTP API. The Vault HTTP API has limitation that the secret name need to be in URI path. The current Certimate, I can use `${DOMAIN}` variable as secret name but this is not flexible and limited when domain name is wildcard or has multiple domain name


### 其他 / Miscellaneous

_No response_

### 贡献 / Contribution

- [ ] 我乐意为此贡献代码！ / I am interested in contributing to this issue!