Generating strict servers using 2.1.0 breaks casting of imported components when moving from 2.0.0. #2010

package main

import (
	"fmt"

	"github.com/oapiexample/api"
	"github.com/oapiexample/otherapi"
)

func main() {
	var a api.GetExampleResponseObject

	var b otherapi.GetOtherExample400JSONResponse
	switch a.(type) {
	case api.GetExample400JSONResponse:
		b = otherapi.GetOtherExample400JSONResponse(a.(api.GetExample400JSONResponse)) // <- this line no longer compiles
	}

	fmt.Println(b.Message)
}

openapi: 3.0.1
info:
  description: An example schema
  title: ExampleAPI
  version: 1.0.0
paths:
  /example:
    get:
      operationId: getExample
      responses:
        200:
          description: OK
        400:
          $ref: "#/components/responses/400"
components:
  responses:
    400:
      content:
        application/json:
          schema:
            properties:
              message:
                type: string
            required:
              - message
            type: object
      description: Bad Request

package: api
generate:
  chi-server: true
  models: true
  strict-server: true
output: ./api/api.go
output-options:
  skip-prune: true

openapi: 3.0.1
info:
  description: Another example schema
  title: OtherAPI
  version: 1.0.0
paths:
  /example:
    get:
      operationId: getOtherExample
      responses:
        200:
          description: OK
        400:
          $ref: "./open_api.yaml#/components/responses/400"

package: otherapi
generate:
  chi-server: true
  models: true
  strict-server: true
import-mapping:
  ./open_api.yaml: github.com/oapiexample/api/api
output: ./otherapi/api.go

package oapiexample

//go:generate go run github.com/deepmap/oapi-codegen/v2/cmd/oapi-codegen@v2.0.0 --config open_api.cfg.yaml ./open_api.yaml
//go:generate go run github.com/deepmap/oapi-codegen/v2/cmd/oapi-codegen@v2.0.0 --config open_api_other.cfg.yaml ./open_api_other.yaml

type GetOtherExample400JSONResponse struct{ externalRef0.N400JSONResponse }

type GetOtherExample400JSONResponse struct{ externalRef0.N400 }

type GetExample400JSONResponse struct{ N400JSONResponse }