Array length validation issue

Q&A (please complete the following information)

• OS: macOS
• Browser: chrome
• Version: 106.0.5249.61
• Method of installation: npm
• Swagger-UI version: 4.14.0
• Swagger/OpenAPI version: OpenAPI 3.0

Content & configuration

Example Swagger/OpenAPI definition:

openapi: 3.0.0
info:
  title: Hello world swagger
  version: 1.0.0
  description: Hello world swagger description
paths:
  /:
    post:
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/String'
      parameters: []
      requestBody:
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file2:
                  type: array
                  items:
                    type: string
                    format: binary
                  maxItems: 2
        required: true
components:
  schemas:
    Object:
      type: object
      example: {}
    Boolean:
      type: boolean
      example: true
    Number:
      type: number
      example: 1
    String:
      type: string
      example: string
    Function:
      type: string
      example: Function
    Undefined:
      type: string
      example: undefined
security: []
tags: []

Swagger-UI configuration options:

SwaggerUIBundle({
        spec: {"openapi":"3.0.0","info":{"title":"Hello world swagger","version":"1.0.0","description":"Hello world swagger description"},"paths":{"/":{"post":{"responses":{"200":{"description":"Success","content":{"application/json":{"schema":{"$ref":"#/components/schemas/String"}}}}},"parameters":[],"requestBody":{"content":{"multipart/form-data":{"schema":{"type":"object","properties":{"file2":{"type":"array","items":{"type":"string","format":"binary"},"maxItems":2}}}}},"required":true}}}},"components":{"schemas":{"Object":{"type":"object","example":{}},"Boolean":{"type":"boolean","example":true},"Number":{"type":"number","example":1},"String":{"type":"string","example":"string"},"Function":{"type":"string","example":"Function"},"Undefined":{"type":"string","example":"undefined"}}},"security":[],"tags":[]},
        dom_id: '#swagger-ui',
        deepLinking: true,
        presets: [
            SwaggerUIBundle.presets.apis,
            SwaggerUIStandalonePreset
        ],
        plugins: [
            SwaggerUIBundle.plugins.DownloadUrl
        ],
        layout: "StandaloneLayout",
        displayRequestDuration: false,
        filter: false,
        tryItOutEnabled: false,      
    });

?yourQueryStringConfig - ??

Describe the bug you're encountering

To reproduce...

Steps to reproduce the behavior:

1. Go to https://editor.swagger.io/
2. Paste YML open api defination
3. Click on the POST API and then click on "Try it out"
4. Now try adding multiple files, you can actually add more than 2 files.

Expected behavior

The swagger UI should not allow adding more than 2 files with this YML specification

Screenshots

Additional context or thoughts

I have found this issue https://github.com/swagger-api/swagger-ui/issues/6327 and it is closed when this PR was merged - https://github.com/swagger-api/swagger-ui/pull/6878. But this doesn't seem to work, don't know why?

Reproduce the issue at https://editor.swagger.io/ using the provided OpenAPI 3.0 definition, then open the POST operation, choose Try it out, and add files to file2. Compare the behavior with maxItems: 2 and inspect the existing handling related to issue #6327 and pull request #6878. Done means the UI prevents adding more than two files for this schema and the behavior is covered by an appropriate test.