[BUG][GO] "reflect" imported and not used

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?
  Getting compilation error "reflect" imported and not used for generated file.
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

Generated code for part of the 3GPP spec not compile.

openapi-generator version

7.10.0-SNAPSHOT

OpenAPI declaration file content or url

openapi: 3.0.0
info:
  version: '1.0.0'
  title: '-'
paths:
  /req:
    get:
      summary: Request
      operationId: Request
      requestBody:
        content:
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/Req'
            encoding:
              prop:
                contentType: application/json
      responses:
        '200':
          description: OK
components:
  schemas:
    Req:
      type: object
      properties:
        prop:
          type: array
          items:
            type: integer

Generation Details

docker run --rm -v "${PWD}:/local" openapitools/openapi-generator-cli:latest generate \
        --input-spec /local/fail_schema.yaml \
        --generator-name go \
        --additional-properties "withGoMod=false" \
        --package-name gen \
        --output /local/gen_fail

Steps to reproduce

You can use this gist.

Related issues/PRs

• https://github.com/OpenAPITools/openapi-generator/pull/19967

Suggest a fix

• https://github.com/OpenAPITools/openapi-generator/pull/19967

Start by running the provided Docker generation command with the minimal OpenAPI schema or linked gist, then inspect the generated Go files for the unused reflect import. Check the related pull request before starting; done means the generated package compiles without the unused-import error.