[BUG] HTTP trigger in workflow created via API template does not keep OAuth configuration

**Describe the bug**
HTTP trigger in workflow created via API template does not keep OAuth configuration

**To Reproduce**
Steps to reproduce the behavior:

1. Create a new workflow
2. Add an HTTP trigger, configure OAuth authorization
3. Click on Instantiate via API in the menu, include all props
4. Copy generated request data
5. Note `"authorization": "OAuth"`
6. Create a new workflow via API
7. See that the Authorization configuration is not OAuth

**Expected behavior**
Configuration kept as OAuth

**Screenshots**

**Additional context**
Reported by a user