[BUG] Merging referenced parameter does not work in 3.1.0

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

The parameters of a path item and an operation object do not get merged if the spec version is 3.1.0 and they both contain a referenced parameter.

openapi-generator version

7.7.0

OpenAPI declaration file content or url

openapi: 3.1.0
info:
  title: Open API
  version: 1.0.0
paths:
  /{path}:
    parameters:
      - $ref: "#/components/parameters/path"
    get:
      parameters:
        - $ref: "#/components/parameters/query"
      summary: Returns a list of users.
      responses:
        200:
          description: get something
          content:
            application/json:
              schema: 
                type: string
components:
  parameters:
    path:
      name: path
      in: path
      required: true
      schema:
        type: string
    query:
      name: query
      in: query
      required: false
      schema:
        type: string

Generation Details

I have tried a handful of generators with their default configs and each time the path parameter was missing in the generated output while the query parameter was present. Going back to version 3.0.2, only using one parameters array or inlining the parameters all fix the problem.

Start by reproducing the issue with the inline OpenAPI 3.1.0 YAML and the default generators described in the report, comparing output with versions 7.7.0 and 3.0.2. Done means the generated output retains both the referenced path parameter and the operation's referenced query parameter when the path item and operation parameter arrays are merged.