Golang x/tools/telemetry: io/timeout reading from telemetry.go.dev

Twice today I have run cmd/stacks and seen it fail like so:

xtools$ stacks
stacks: Error reading reports: error on GET https://telemetry.go.dev/data/2025-06-08: Get "https://telemetry.go.dev/data/2025-06-08": dial tcp 34.149.96.102:443: i/o timeout

The new telemetry.go.dev facade endpoint is much less reliable than the old storage bucket endpoint. Perhaps cloudarmor's DoS detection is triggering spuriously.