This somehow broke codspeed builds?

  libc++abi: terminating due to uncaught exception of type kj::ExceptionImpl: workerd/api/http.c++:118: failed: expected c != '\0' && c != '\r' && c != '\n'; jsg.TypeError: Invalid header value.
  stack: 6f18f17 6f15f0c 6f5adbd 6f16a0d 6d0e56 6c9f127 6c95f4f 6c90468 6c8765a 6d0b6d 6d1511 cdb715a 6ceadc 6ce37e 74a2d1 74aff6 743200 ce22925 e1d9d8f e1d9e3f 333ca4

This somehow broke codspeed builds?

  libc++abi: terminating due to uncaught exception of type kj::ExceptionImpl: workerd/api/http.c++:118: failed: expected c != '\0' && c != '\r' && c != '\n'; jsg.TypeError: Invalid header value.
  stack: 6f18f17 6f15f0c 6f5adbd 6f16a0d 6d0e56 6c9f127 6c95f4f 6c90468 6c8765a 6d0b6d 6d1511 cdb715a 6ceadc 6ce37e 74a2d1 74aff6 743200 ce22925 e1d9d8f e1d9e3f 333ca4

turns out this benchmark is already broken: https://github.com/cloudflare/workerd/actions/runs/19143666391/job/54715486695?pr=5472