Counting gateways doesn't work in tests due to upstream bug

[pmalek]

Related TODO comment:

kubernetes-telemetry/pkg/telemetry/manager_test.go

Lines 228 to 230 in fe6d3b8

	// TODO fix below count: it should be 1 but for some reason even after adding the GVR
	// to scheme gateways can't be found by listing.
	"k8s_gateways_count": 0,

This is probably related to kubernetes/kubernetes#110053