Fix the CORSMethodMiddleware bug with subrouters
Fix the CORSMethodMiddleware bug with subrouters: a task in repo2rlenv-commit-runtime-v2 (Harbor dataset). Title: CORSMethodMiddleware does not work correctly with subrouters
The task
**Title:** CORSMethodMiddleware does not work correctly with subrouters
Part of FineEnvs/repo2rlenv-commit-runtime.