Return 500 error when handler has wrong return type (#8845)#8891

Dreamsorcerer merged 4 commits into3.11aio-libs/aiohttp:3.11from

patchback/backports/3.11/48a5e07ad833bd1a8fcb2ce6f85a41ad0cef9dc6/pr-8845aio-libs/aiohttp:patchback/backports/3.11/48a5e07ad833bd1a8fcb2ce6f85a41ad0cef9dc6/pr-8845Copy head branch name to clipboard