fix(components): add support for oneOf/anyOf JSON Schema keywords in parameter-row rendering

[glowcloud]

Refs #7912

[char0n]

Hi @glowcloud,

Could we provide more context to this PR? I've seen the original issue #7912, but I'm missing answers for the following questions:

• why are we doing this; why we decided to provide a fix; is the issue legit?
• were there related effort in different issues/PR which addresses similar bug? (fix(oas3): add support for oneOf/anyOf JSON Schema keywords in request-body rendering #9767, OpenAPI 3.x: add support for getting example values in request body for schemas with anyOf and allOf keywords when there are other properties #9763)?

[glowcloud]

• why are we doing this; why we decided to provide a fix; is the issue legit?
• were there related effort in different issues/PR which addresses similar bug? (fix(oas3): add support for oneOf/anyOf JSON Schema keywords in request-body rendering #9767, OpenAPI 3.x: add support for getting example values in request body for schemas with anyOf and allOf keywords when there are other properties #9763)?

The issue is basically the same as #9763 but this one concerns cases where oneOf/anyOf is inside of a parameter instead of a request body. It should be fixed in both places and this PR uses the same logic as in #9767, for getting the correct properties of the parameter and the default value.

[char0n]

Logic is sound. Nice work! Please have a look at my CR comment.