Array values of exploded deepObject query parameter are not URL-encoded

Individual array values of a deepObject query parameter defined with explode = true are not URL-encoded during serialization and sent as is. For example:

prop:
      name: prop
      in: query
      schema:
        type: object
        properties:
          myKey: { type: array, items: string }
      style: deepObject
      explode: true

with prop set to

{ "myKey": ["aaa+bbb"] }

is serialized to "prop[myKey]=aaa+bbb" instead of "prop[myKey]=aaa&2bbbb" and is received on the back end as "prop[myKey]=aaa bbb".

• Method of installation: dist assets
• Swagger-UI version: 3.37.2
• Swagger/OpenAPI version: OpenAPI 3.0

Reproduce the OpenAPI 3 deepObject example with explode=true and the array value "aaa+bbb", then trace the query-parameter serialization path used by the dist assets. Verify that the generated parameter preserves the plus sign through URL encoding and add or update coverage for this case.