The seat runs the running controller's besideRefs, which clones no mesh-sdk until this
change has rolled out, so a missing clone failing the test kept this change from ever
passing its own check. A follow-up makes it a failure again after the rollout.
A pull request moving the SDK passed its check against the old SDK and then failed
everywhere once it rolled out. In a merge check the test now reads the clone's history
at the tree's own go.mod pin, and holds the captured copy to the clone byte for byte.
jschoubben