[BUG]: Parameters with `content` field are not correctly serialized

[valerii15298]

To reproduce...

Paste this OpenAPI definition into https://editor.swagger.io:

openapi: 3.1.0
info: 
  title:
  version:
paths:
  /test:
    get: 
      parameters: 
        - in: query
          name: pet
          content:
            application/json: 
              schema: 
                type: string
      responses: 
        2XX:
          description:
          content: 
            application/json: 
              schema:
                type: object

Describe the bug you're encountering

When filling the parameter in Swagger UI the produced request looks like this:

curl -X 'GET' \
  'https://editor.swagger.io/test?pet=cat' \
  -H 'accept: application/json'

The parameter pet is not properly serialized.

Expected behavior

Query string should look like this: %22cat%22 which is percent encoded from "cat" since definition of the pet parameter uses content application/json.
And the curl snippet should look like this:

curl -X 'GET' \
  'https://editor.swagger.io/test?pet=%22cat%22' \
  -H 'accept: application/json'