DRF bug SafeString help_text

schema.yaml

openapi: 3.0.2
info:
  title: Your Project
  version: 1.0.0
  description: "API for all things \u2026"
paths:
  /example-model/:
    get:
      operationId: listExampleModels
      description: Concrete view for listing a queryset or creating a model instance.
      parameters: []
      responses:
        '200':
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Example'
          description: ''
      tags:
      - example-model
    post:
      operationId: createExampleModel
      description: Concrete view for listing a queryset or creating a model instance.
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Example'
          application/x-www-form-urlencoded:
            schema:
              $ref: '#/components/schemas/Example'
          multipart/form-data:
            schema:
              $ref: '#/components/schemas/Example'
      responses:
        '201':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Example'
          description: ''
      tags:
      - example-model
components:
  schemas:
    Example:
      type: object
      properties:
        id:
          type: integer
          readOnly: true
        field:
          type: string
          description: !!python/object/new:django.utils.safestring.SafeString
          - <ul><li>info a</li><li>info b</li></ul>
      required:
      - field