Validate `required` + `default` properties

[sebas-intellegens]

using petstore.yaml
and the "required_param_has_default": "error" config option

adding default: some_string here on a parameter and running lint-openapi does correctly return an error

however setting default: some_string here on a property does not return a error

the config option "required_param_has_default": "error" refers to param so I guess this excludes request body objects etc (?)
if so, I was wondering if this is something that makes sense to add (because it seems equally incorrect on a param and request body object's prop)?

(I'm using version 0.51.3)

[dpopp07]

@sebas-intellegens Apologies for the late reply here. That's certainly worth considering, though we currently have a suite of higher-priority rules we're implementing and don't have much extra bandwidth. If this is important for your use case in the short term, I recommend extending our ruleset with a custom rule that enables this enforcement.