[CI] Flake - graph_context_menu nodes undefined

[nrfox]

Describe the bug

CI flake involving the following test:

Screenshot of cypress at time of failure:

From run: https://github.com/kiali/kiali/actions/runs/8560404196/job/23459494170#step:8:861

[nrfox]

I can't say for sure but I think this is the line that is failing:

kiali/frontend/cypress/integration/common/graph_context_menu.ts

Lines 35 to 37 in 5f59bc2

	const node = state.cy.nodes(
	`[nodeType="service"][service="${svcName}"][cluster="${cluster}"][namespace="bookinfo"]`
	);

[jshaughn]

Will monitor for one more sprint.