Bug report, feature request or other request

[johnno82]

Describe the issue
When using Microsoft.Azure.WebJobs.Extensions.OpenApi setting the content type: application/x-www-form-urlencoded on a OpenApiRequestBody attribute, SwaggerUI is not rendering the ui properly.

To Reproduce
Steps to reproduce the behavior:

1. Create an HTTP triggered function with OpenApi support
2. Add the OpenApiRequestBody attribute with content type se to: application/x-www-form-urlencoded
3. Run the function
4. navigate to /swagger/ui

Expected behavior
SwaggerUI should render a text box where the user can input the body when trying the function

Screenshots

Environment (please complete the following information, if applicable):

• OS: Windows
• Browser Chrome
• Version [e.g. 22]

Additional context
Add any other context about the problem here.