Array of files in input doesn't work in GUI

Describe the bug

When we have an API that requires a list of documents in input, it's impossible to upload them.

Expected behavior

The upload of multiple files can be done via Docusaurus GUI.

Current behavior

From Docusaurus is impossible to upload multiple files and to invoke these types of API endpoints.

Steps to reproduce

Pre-requirements: having an endpoint API that can be used to upload an array of files.
For example, having this type of OpenApi properties:
properties:
files:
type: array
description: List of documents to upload async
items:
type: string
format: binary

Screenshots

Example of docusaurus' view of a single file as input (it works!):

Example of docusaurus' view of an array of files as input (it doesn't works):

Example of Swagger editor of OpenAPI with the same OpenAPI defined above (it works):

here is possible to upload multiple files as array.

Your Environment

• Version used: v3.0.0-beta.4 (Docusaurus version 3.1.0)
• Environment name and version:
  • Docusaurus side: Chrome Browser 122.0.6261.71 (Official build 64 bit);
  • BE side: SpringBoot BE engine and NGINX web server
• Operating System and version (desktop or mobile): Windows 11 Desktop

Reproduce the issue with the provided OpenAPI schema and inspect the GUI handling for request-body file inputs, comparing the single-file and array-of-binary cases. Confirm the request can represent multiple selected files and verify the generated API call against the working Swagger editor behavior.