[BUG][JAVA] Missing model import in api class

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

My configuration:

generatorName: spring
interfaceOnly: true
useSpringBoot3: true
modelNameSuffix: DTO

After generation, I get the following result:

Classes ApiUtil, QueryParams, Types were generated correctly, but there is an error in class DefaultApi.
There is no import for QueryParams class in the DefaultApi:

openapi-generator version

7.9.0

OpenAPI declaration file content or url

openapi: 3.0.3
info:
  title: doc
  version: '1.0.0'
paths:
  /endpoint:
    get:
      parameters:
        - name: type
          in: query
          description: 'Some type'
          required: true
          schema:
            $ref: '#/components/schemas/QueryParams'
      responses:
        '200':
          description: ok
components:
  schemas:
    Types:
      type: string
      enum:
        - Type1
        - Type2
    QueryParams:
      properties:
        alias:
          $ref: '#/components/schemas/Types'
      additionalProperties:
        type: string

Start by reproducing the report with the supplied OpenAPI declaration and the spring configuration, then inspect the generated DefaultApi alongside QueryParams and Types. Confirm the generated Java does not import QueryParams and verify that the corrected output compiles for this interfaceOnly, Spring Boot 3 configuration.