"Smaller Binary" breaks recently

### What is the issue?

The resulted binary from guide [https://tailscale.com/kb/1207/small-tailscale](url) only works as tailscale command, not tailscaled deamon.


### Steps to reproduce

Building on 1.82 release branch with following command:
`go build -o tailscale.combined -tags ts_include_cli,ts_omit_aws,ts_omi
t_bird,ts_omit_tap,ts_omit_kube -ldflags="-s -w" ./cmd/tailscale`

### Are there any recent changes that introduced the issue?

Last working version was:
Program starting: v1.77.0-dev20241011-t12e6094d9-dirty, Go 1.23.2: []string{"./tailscale.combined.old"}

### OS

Linux

### OS version

Not related (confirmed on both GOARM=5 and AMD64)

### Tailscale version

1.82.5

### Other software

_No response_

### Bug report

_No response_