add missing function call to `normalize-catchall-routes` test case (#60777)
### Fixed a Test Case
- Tests fixed:
`packages/next/src/build/normalize-catchall-routes.test.ts`, the
function call `normalizeCatchAllRoutes(appPaths)` was removed by
accident in this [merged commit
](https://github.com/vercel/next.js/commit/efebba80a7ca06b0fdcd619563f13945eb22508a#diff-e3c0d3c6e15d8b035a3252a1ada2b04d5dd33010885fed8f6d689f75aa80bff5)
rendering the test case pointless
REF NEXT-1984