OpenAPI Example with multipart/form-data not showing up

[SeeRich]

First Check

• I added a very descriptive title here.
• I used the GitHub search to find a similar question and didn't find it.
• I searched the FastAPI documentation, with the integrated search.
• I already searched in Google "How to X in FastAPI" and didn't find any information.
• I already read and followed all the tutorial in the docs and didn't find an answer.
• I already checked if it is not related to FastAPI but to Pydantic.
• I already checked if it is not related to FastAPI but to Swagger UI.
• I already checked if it is not related to FastAPI but to ReDoc.

Commit to Help

• I commit to help with one of those options 👆

Example Code

from typing import Annotated
from fastapi import FastAPI, UploadFile, Form, File

# Run using uvicorn main:app --reload
# Visit: http://127.0.0.1:8000/docs

app = FastAPI()

@app.post("/form-test")
async def form_test(
        str_data: Annotated[str, Form(examples=["HELLO"])],
        file: Annotated[UploadFile, File()]):
    return

Description

The HELLO example is not shown in the docs.

Operating System

Windows

Operating System Details

No response

FastAPI Version

0.108.0

Pydantic Version

2.5.3

Python Version

3.11.3

Additional Context

No response

[Kludex]

I've created #10999 from this discussion.