Handle emtpy object in security array

[cmeeren]

According to OAI/OpenAPI-Specification#1684, the following is valid:

security:
  - Session: []
  - {}

(This is needed e.g. to signal that an operation is available both with a specific auth scheme and without authentication, e.g. for limited guest access.)

ReDoc currently renders it as this:

The rendering should be improved. Not sure what the best rendering would be, but anything that clearly says or indicates "no authentication" would already be better than nothing.

Sorry I can't contribute myself; I'm not a JS/front-end dev.

[cmeeren]

Has this been released? I still see the old behavior, more than a month after this was closed.

[cmeeren]

For future readers, seems like this works now: