feat: Show items descriptions in oneOf components

[sezaru]

What/Why/How?

Bsaically this allows users to set description in object schemas that are insode oneOf schemas and show it to the user.

I consider this a WIP for now since I'm not sure the way I'm doing it is the best approach.

What I tried to do first was to use directly activeSchema.description, but I noticed that when the schema doesn't have a description defined, it will have the description of the oneOf schema instead. I'm not sure if that is by design, a bug, or something that needs some other change to work.

The solution was to use activeSchema.rawSchema.description since that one will contain the correct description.

Tests

I didn't add any new test, the existing ones are passing just fine.

Screenshots (optional)

Check yourself

• Code is linted
• Tested
• All new/updated code is covered with tests