Describe your environment

OS: any
Python version: any
Package version: 0.60b0

What happened?

fastapi/fastapi#8027

Steps to Reproduce

from typing import Optional
from starlette.middleware.cors import CORSMiddleware
from fastapi import FastAPI


fastapi_app = FastAPI()
app = CORSMiddleware(app=fastapi_app, allow_origins=['*'])
FastAPIInstrumentor.instrument_app(app)

Expected Result

Compatible with CORSMiddleware app.

Actual Result

Skipping FastAPI instrumentation due ... got CORSMiddleware.

Additional context

No response

Would you like to implement a fix?

None

Tip

_{React with 👍 to help prioritize this issue. Please use comments to provide useful context, avoiding +1 or me too, to help us triage it. Learn more here.}