Refuse an unmet seat dependency the catalogue could meet (hq ADR 0207 §4)

status reported no unmet dependency on any node once systemd, pacman and docker
were assigned to all four (to-be 42), which is the condition ADR 0207 set for the
switch. A dependency no catalogue module could meet stays a report before and
after the switch, as assign already said it: there is no remedy to name.

cmd/mesh-controller/seat_dependencies_test.go

@@ -105,6 +105,8 @@ func TestUnassigningTheLastHolderUnderItsDependentsIsRefused(t *testing.T) {
 }
 
 func TestStatusReportsAnUnheldDependencyWithoutRefusingTheMachine(t *testing.T) {
+	// The mesh as it ran before the switch (novox/hq ADR 0207 §4).
+	defer catalogue.EnforcingSeatDependencies(false)()
 	open := aMesh(t)
 	ctx := t.Context()
 	register(t, open, serviceManagerHolder())