Highlight the mandatory query parameters and headers in tryout

[sarah-h123]

Bug description

In the legacy dev portal when you trying out an API you get directly a clear picture in red box for the mandatory query parameters and headers that need to be filled in before tying it out. That is not the case in the new dev portal

Example from Legacy dev portal:

Example from new dev portal:

In the new dev portal. You will only get informed once you have try the API once

Expected behaviour

Would be nice to have these highlighted from the beginning in the new dev portal

Reproduction steps

1. Go to the developer portal
2. Choose an API
3. tryout

Is your portal managed or self-hosted?

Managed

[mikebudzynski]

Thanks for bringing this up!