GOMAXPROCS still 32 in the pod after bumping the builder to golang:1.25

Rebuilt on golang:1.25 expecting the runtime to see the 2 CPU limit. The pod still logs gomaxprocs=32 numcpu=32 and nr_throttled climbs a few thousand per run. Workers 16 to 4 only took 9 min to 7. What am I missing? Thanks.

FROM golang:1.25 AS build
...
RUN CGO_ENABLED=0 go build -o /manifestd .

module github.com/maxlab/manifestd

go 1.23.0

resources:
  requests:
    cpu: "1"
  limits:
    cpu: "2"

No GOMAXPROCS in the pod env, and nothing in the code calls runtime.GOMAXPROCS with a value. The same binary takes about 2.5 min on my MacBook.