Bug: `_middleware.tsx` doesn't run before `_500.tsx` or `_error.tsx`

[marvinhagemeister]

[NanoEdit]

After #2598 _middleware.ts runs in subfolders but not on the root folder

For example routes folder structure:

• _middleware.ts
• index.tsx
• category/index.tsx

Then at /category/foo middleware runs at /foo it doesn't

BTW _layout is fixed correctly in #2598, but _middleware doesn't

[csvn]

Maybe close this issue in favor of #2843? They seem to be duplicates

[marvinhagemeister]

Duplicate of https://github.com/denoland/fresh/issues/2843